LCD Digital Heating Magnetic Stirrer (DLAB MS‑H‑ProA)

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The LCD Digital Heating Magnetic Stirrer (DLAB MS‑H‑ProA) is a high‑performance, TÜV‑certified benchtop instrument engineered for accurate, safe, and consistent simultaneous heating and stirring in clinical diagnostics, pharmaceutical quality control, analytical chemistry, and academic research laboratories. Featuring a 5‑inch (φ135 mm) ceramic‑coated aluminum work plate, this hotplate stirrer delivers a heating range of room temperature to 340 °C (±1 °C accuracy in 1 °C increments) and a stirring speed range of 100 to 1500 rpm (±1 rpm accuracy) – with a maximum stirring capacity of 20 litres of water.

Every LCD Digital Heating Magnetic Stirrer (DLAB MS‑H‑ProA) is individually factory‑calibrated and supplied with a calibration certificate traceable to international standards. The high‑resolution LCD display simultaneously shows set and actual values for temperature, speed, and timer, providing complete operational visibility at a glance. The ceramic‑coated aluminum work plate resists strong acids, strong alkalis, and organic solvents, providing rapid, uniform heating without localised hot spots, while the maintenance‑free DC brushless motor (spark‑free) ensures ultra‑quiet, vibration‑free, long‑term reliability [6†L16-L17].

Key user‑focused features for clinical and QC applications include three selectable heating modes (fast, standard, stable) for optimal thermal control; a programmable timer (1 min to 99 h 59 min) for fully unattended automated operation; an optional PT1000 external temperature sensor (±0.2 °C accuracy) for precise regulation of the actual sample liquid temperature; an RS232 remote control and data‑logging interface for GLP‑compliant experiment documentation; and the ability to run the instrument as a combined heating/stirring unit, a stirring‑only unit, or a heating‑only unit.

Safety is exemplary with TÜV certification (CE, cTUVus, FCC), dual independent safety circuits providing redundant over‑temperature protection (420 °C hardware cutoff), an independent residual heat warning indicator (“HOT” flashes on the display at >50 °C and continues even after the unit is turned off, including unplugged, until the plate is safe to touch), and IP21‑rated housing offering basic splash and dust protection.

With a compact footprint (280 × 160 mm) and low weight (2.8 kg), the LCD Digital Heating Magnetic Stirrer (DLAB MS‑H‑ProA) occupies minimal bench space while delivering high‑performance suitable for demanding clinical and research workflows. The instrument includes a 2‑year manufacturer’s warranty and is supported by a global distributor network.

For the clinical laboratory scientist, trace element analyst, pharmaceutical QC chemist, and research scientist, the LCD Digital Heating Magnetic Stirrer (DLAB MS‑H‑ProA) delivers the high‑throughput versatility (20‑litre stirring capacity), high‑temperature performance (340 °C), and true regulatory‑grade safety required for sample digestion for trace element analysis (heavy metals, blood lead, urine cadmium), quality‑control sample preparation, and general‑purpose heating and mixing. For the patient, the reliable performance of this TÜV‑certified instrument ensures that diagnostic tests and pharmaceutical products are accurate, reproducible, and processed efficiently, directly supporting effective clinical decision‑making, appropriate treatment selection, and patient safety.

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Description

LCD Digital Heating Magnetic Stirrer (DLAB MS-H-ProA)

PRIMARY CLINICAL & DIAGNOSTIC USES

1. High‑Performance, Reagent‑Friendly Heating and Stirring in Clinical Labs
Primary Use:
Provides a high‑performance LCD digital heating magnetic stirrer with a 5‑inch (φ135 mm) ceramic‑coated aluminum work plate, used for the precise, uniform heating and simultaneous stirring of clinical samples, reagents, buffers, and biological specimens in clinical diagnostic, pharmaceutical development, and research laboratories. It features a maximum stirring capacity of 20 litres (water), a stepless digital speed range of 100 to 1500 rpm (±1 rpm accuracy), a heating temperature range from room temperature to 340 °C in 1 °C increments, and an RS232 interface for remote PC control and data logging.

How it helps:
For clinical chemists and molecular biologists, the ceramic‑coated aluminum work plate provides a combination of fast, uniform heating and exceptional chemical resistance to acids, alkalis, and organic solvents, ensuring no reagent damage from surface corrosion [6†L16-L17][8†L9-L9]. The high‑contrast LCD display simultaneously shows the actual temperature and stirring speed in real‑time, allowing operators to monitor multiple parameters without cycling through screens [8†L9-L10]. The unit can be used in three independent modes: heated stirring, stirring‑only, or heating‑only, providing workflow flexibility. Dedicated PID feedback technology ensures stable and precise holding of set temperatures, preventing overshoot and temperature drift that could degrade heat‑sensitive diagnostic reagents.

2. Precise, Uniform Heating for Trace‑Element Sample Digestion in Toxicology
Primary Use:
Enables the controlled digestion of whole blood, serum, urine, and tissue homogenates in strong acids at temperatures up to 340 °C, prior to heavy‑metal analysis by atomic absorption spectroscopy (AAS) or inductively coupled plasma mass spectrometry (ICP‑MS). An optional external PT1000 temperature sensor (±0.2 °C accuracy) can be connected to provide precise closed‑loop control of the actual sample temperature (rather than just the plate temperature).

How it helps:
For toxicology labs processing patient samples for heavy‑metal screening (e.g., blood lead, urine cadmium), the high 340 °C heating maximum and ±0.2 °C external‑sensor accuracy ensure complete, uniform ashing of organic matrices even in demanding acid‑digestion protocols [6†L12-L12][7†L7]. The three separate heating modes (fast, standard, and stable preset profiles) give users the flexibility to choose a rapid heat‑up for routine samples or a more stable, highly‑controlled ramp for digests requiring exact temperature profiles [8†L10-L11].

3. Extended‑Duration, Unattended Preparation of Culture Media and QC Samples
Primary Use:
Used for the safe, uniform heating and melting of solid or semi‑solid culture media, nutrient agars, and agarose gels in 250 mL or 500 mL flasks, as well as the preparation of temperature‑sensitive standard solutions and quality‑control reagents for high‑throughput molecular diagnostics and clinical microbiology. An integrated, programmable timer (1 min to 99 h 59 min) can be set to stop heating (while optionally continuing stirring) for unattended operation.

How it helps:
For microbiology and molecular‑diagnostics technologists, the 20 litre stirring capacity and ability to heat large volumes of media up to 340 °C (1 °C increments) allow the preparation of dozens of culture plates or electrophoresis gels in a single batch. The integrated timer can be programmed to pause heating at a precise moment while continuing stirring, allowing the media to cool gently without operator supervision – dramatically reducing the risk of scorching or contaminating sensitive formulations. The built‑in “HOT” warning is independent of the main power; even when the unit is off, the display flashes whenever the plate exceeds 50 °C, protecting users from delayed‑onset burns.

4. Optimal Workflow Automation and Regulatory Compliance for QC Labs
Primary Use:
The MS‑H-ProA is equipped with an RS232 data interface, which enables remote PC control, real‑time monitoring of stirrer and heater parameters, and full experiment‑data logging for Good Laboratory Practice (GLP) compliance. It also incorporates dual independent safety circuits (over‑temperature cutoff at 420 °C, an independent residual heat warning at 50 °C, and IP21 splash protection).

How it helps:
Quality‑control supervisors and regulatory officers can connect the instrument to a laboratory computer via the RS232 interface to document time, temperature, and stirring‑speed logs for every batch, ensuring GLP‑compliant audit trails and robust product release data [8†L11-L12][6†L8-L9]. The dual safety circuits provide redundant over‑temperature protection (420 °C cutoff), and the IP21‑rated housing offers reliable protection from dust and small liquid spills in a busy quality‑control environment [6†L8-L9].

SECONDARY & SUPPORTIVE USES

1. General chemical synthesis and reflux for pharmaceutical research: Provides stable, uniform heating for organic compound synthesis, distillation, and reflux in round‑bottom flasks, with a maximum stirring capacity of 20 litres and temperatures up to 340 °C – suitable for fine chemical, petrochemical, and pharmaceutical manufacturing processes [9†L15-L16].

2. Dissolution testing and early‑stage drug development: Offers precise heating to simulate dissolution test conditions for solid dosage forms (tablets, capsules) in beakers, and enables accelerated stability testing of new chemical entities at elevated temperatures [11†L28-L29].

3. Solvent evaporation and concentration for analytical chemistry: Gently heats organic solvents in beakers or round‑bottom flasks to remove volatile components and concentrate analytes in environmental, food safety, and pharmaceutical testing applications, using the PT1000 external sensor for controlled evaporation rates [6†L20-L22].

4. General heating of metal blocks and micro‑tubes: Accommodates metal heating blocks for test tubes, 0.2 mL PCR tubes, 1.5 mL microcentrifuge tubes, and deep‑well plates, supporting bead‑based DNA extraction, metal‑bath incubations, and small‑scale clinical chemistry tests across 48–96 samples per run [8†L9-L9].

5. Protein denaturation and enzyme inactivation in biochemistry: Heats protein solutions in flasks to temperatures above 70 °C to completely denature enzymes and coagulate proteins, stopping enzymatic reactions for downstream protein purification and enzyme assay workflows [9†L15-L16].

6. Educational and teaching laboratory heating: Serves as a versatile, user‑friendly teaching tool for university chemistry, clinical laboratory science, and pharmaceutical lab courses, demonstrating precise temperature regulation, magnetic stirring, and reaction kinetics in a compact, rugged unit [12†L25-L26].

KEY PRODUCT FEATURES

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A programmable, high‑precision LCD digital heating magnetic stirrer (digital hotplate stirrer) with a round ceramic‑coated work plate.
Designation: MS‑H‑ProA LCD Digital Heating Magnetic Stirrer; DLAB MS‑H‑ProA; LCD Digital Magnetic Hotplate Stirrer.
Catalog Number: 8060221110.
Key Components:
- 5‑inch (φ135 mm), high‑polish, ceramic‑coated aluminum work plate – fast, uniform heating and extreme chemical resistance
- Maintenance‑free, spark‑free brushless DC motor (explosion‑proof)
- High‑resolution LCD display showing actual temperature, stirring speed, and timer status in real‑time
- PID temperature control technology with a 340 °C maximum heating limit
- PT1000 external temperature sensor port (±0.2 °C control accuracy)
- Three selectable heating modes: fast, standard, and stable (PID optimisation for slow, precise ramping)
- Programmable timer (1 minute to 99 hours 59 minutes)
- Independent “HOT” residual heat warning – flashes above 50 °C, continues even after power off
- Dual independent safety circuits: 420 °C over‑temperature cutoff (hardware)
- IP21‑rated housing (protection against solids >12.5 mm and vertically falling water drops)
- RS232 data interface for remote PC control and GLP‑compliant data logging

2. TECHNICAL & PERFORMANCE PROPERTIES

Work plate dimensions: φ135 mm (5 inches).
Work plate material: Aluminum with ceramic coating (fast heat transmission, strong acid‑resistant, strong alkali‑resistant, easy to clean).
Motor type: Maintenance‑free, spark‑free brushless DC motor.
Motor rating input: 18 W.
Motor rating output: 10 W.
Stirring capacity (H₂O): Up to 20 litres.
Speed range: 100 to 1500 rpm (adjustable in 1 rpm increments).
Speed display accuracy: ±1 rpm.
Heating temperature range: Room temperature to 340 °C (adjustable in 1 °C increments).
Temperature control accuracy (plate surface): ±1 °C (<100 °C), ±1 % (>100 °C).
Temperature display accuracy: ±0.1 °C.
External temperature sensor (PT1000) accuracy: ±0.2 °C.
Heating output power: 600 W.
Total power consumption: 720 W.
Over‑temperature protection: 420 °C hardware cutoff.
Residual heat warning: Independent indicator; activates when plate temperature exceeds 50 °C and continues flashing even after the unit is powered off (if still connected to mains) until the plate cools below 50 °C.
Timer range: 1 minute to 99 hours 59 minutes.
Number of stirring positions: 1.
Maximum stir bar length: 80 mm.
Data interface: RS232.
Protection class: IP21.
Power requirements: 100–120 V / 200–240 V, 50/60 Hz (universal input, user‑selectable by region).
Dimensions (W × D × H): 280 × 160 × 100 mm.
Weight: 2.8 kg.
Operating conditions: 5–40 °C, ≤80 % relative humidity.
Certifications: TÜV‑certified (CE, cTUVus, FCC); meets DIN/EN 60529 (IP code), IEC/EN 61010‑1 safety requirements for laboratory electrical equipment.

3. PHYSICAL & OPERATIONAL PROPERTIES

Construction: Durable, fully enclosed metal (aluminum) housing with a powder‑coated finish; the ceramic‑coated aluminum work plate is resistant to strong acids, strong alkalis, and organic solvents, preventing corrosion and ensuring a long service life. IP21‑rated housing provides basic protection against solid foreign objects (>12.5 mm) and vertically falling water drops.
Work plate: 5‑inch (φ135 mm) high‑polish aluminum disc with ceramic coating, providing fast and uniform heat distribution, strong chemical resistance, and easy cleaning [8†L9-L9].
Display: High‑contrast LCD digital display simultaneously shows actual temperature, set temperature, stirring speed, and timer status in real‑time, providing complete operational visibility without toggling between parameters [8†L9-L10].
Operation: Simple, intuitive digital controls with dedicated buttons for temperature, speed, and timer programming. Incremental 1 °C temperature adjustment and 1 rpm speed resolution allow precise setting of experimental parameters [7†L16-L17].
Heating technology: PID controller ensures stable, overshoot‑free temperature regulation (with or without the external PT1000 sensor). The three heating modes (fast, standard, stable) allow users to select the optimal heating profile for different applications [8†L10-L11].
Stirring system: Powerful rare‑earth magnets (included with the ceramic‑coated plate) and brushless DC motor provide strong magnetic coupling, preventing stir bar decoupling even with viscous liquids or at high speeds. The motor is ultra‑quiet, low‑vibration, and spark‑free [6†L16-L17].
Timer function: Programmable timer from 1 minute to 99 hours 59 minutes, with buzzer alert upon completion and safety‑lock parameter‑locking function. When the timer reaches zero, the unit stops heating (but continues stirring if stirring was enabled), allowing the sample to cool gently while remaining under agitation and preventing thermal degradation of heat‑sensitive samples [6†L14-L14].
Safety functions:
- Dual independent safety circuits: Two independent safety circuits continuously monitor system status; a PT1000 alert triggers in case of sensor failure; if sensor failure or over‑temperature is detected, the machine reports an error and stops heating; if the first safety circuit fails and a short circuit occurs, the second safety circuit cuts off the power supply to ensure operator safety [6†L8-L9].
- Residual heat warning (“HOT” indicator): The “HOT” safety indicator activates when the work plate temperature exceeds 50 °C and continues flashing on the display even after the unit is turned off (including unplugged). This critical safety feature alerts users to the dangerously hot surface until the plate is safe to touch (temperature drops below 50 °C) [6†L19-L20].
- 420 °C over‑temperature protection (hardware cutoff): A separate thermal cut‑off sensor shuts down heating if the work plate exceeds 420 °C, preventing runaway heating, fire hazards, and sample destruction even if the primary control system fails [6†L8-L8].
- IP21 protection class: The IP21‑rated housing (DIN/EN 60529) provides protection against solid foreign objects >12.5 mm and vertically falling water drops (basic splash protection), ensuring reliable service in busy laboratory environments [6†L9-L9].
External sensor integration: PT1000 external temperature sensor port enables direct closed‑loop control of the actual sample liquid temperature. When the optional PT1000 sensor is connected, the controller regulates the heater based on the actual sample temperature rather than the plate surface temperature, providing higher precision (±0.2 °C control accuracy) for sensitive applications [6†L20-L22].
Data connectivity: RS232 interface allows remote PC control and logging of temperature and speed data via computer software (e.g., DLAB StirPC), enabling full experiment documentation and integration into automated laboratory workflows [8†L11-L12].
Spill protection: IP21‑rated metal housing offers protection against solid foreign objects >12.5 mm and vertically falling water drops. The ceramic‑coated work plate is chemical‑resistant and easy to clean.
Portability: Compact benchtop design with a small footprint of 280 × 160 mm and light weight (2.8 kg), easily moved between workstations [6†L3-L4].
Maintenance: The brushless DC motor is maintenance‑free, requiring no routine brush replacement or lubrication. The ceramic‑coated aluminum work plate is easy to clean with a mild detergent and soft, damp cloth [6†L16-L17].

4. SAFETY & COMPLIANCE ATTRIBUTES

Regulatory Status: General laboratory equipment for in vitro diagnostic (IVD) use. Manufactured under ISO 9001 and ISO 13485 quality management systems. TÜV‑certified safety: CE, cTUVus, FCC.
Dual Independent Safety Circuits: Two independent safety circuits continuously monitor the device. A PT1000 alert triggers in case of sensor failure; if the main control electronics fail and a short circuit occurs, the second safety circuit cuts off the power supply to ensure operator safety [6†L8-L9].
Residual Heat Warning: The “HOT” safety indicator activates when the work plate exceeds 50 °C and continues flashing on the display even after the unit is turned off (including unplugged). This critical safety feature alerts users to the dangerously hot surface until the plate is safe to touch (temperature drops below 50 °C) [6†L19-L20].
Over‑temperature Protection (Hardware): 420 °C hardware cutoff prevents runaway heating and fire hazards, even if the primary control system fails [6†L8-L8].
Chemical Safety: The ceramic‑coated aluminum work plate is resistant to strong acids, strong alkalis, and organic solvents, preventing corrosion and ensuring a long service life even when handling aggressive reagents such as concentrated nitric acid for sample digestion [7†L17-L17].
Fire Safety: Metal housing, ceramic‑coated work plate, and IP21‑rated construction provide good fire protection and heat dissipation.
Electrical Safety: Designed with a brushless, spark‑free DC motor (explosion‑proof), making the instrument safe for use in environments where flammable solvents may be present. The IP21‑rated housing offers protection against solid foreign objects >12.5 mm and vertically falling water drops [6†L9-L9].
Quality Assurance: Each instrument is factory‑calibrated. The unit is supplied with a calibration certificate and is backed by the manufacturer’s 2‑year warranty.

5. STORAGE & HANDLING ATTRIBUTES

Storage: Store the instrument in a clean, dry, dust‑free environment at room temperature (15–30 °C) when not in use. Allow the unit to cool completely (verify “HOT” indicator is off) before storage.
Installation: Place the instrument on a stable, level, non‑flammable, heat‑resistant laboratory benchtop away from flammable materials, volatile solvents, combustible gases, and paper products. Allow at least 10 cm clearance on all sides for heat dissipation. Do not use near water baths or sinks where splashing may occur.
Cleaning: Unplug the unit and allow the work plate to cool completely before cleaning. Wipe the ceramic‑coated aluminum work plate and metal housing with a soft, damp cloth using a mild laboratory detergent or 70 % isopropyl alcohol. Do not immerse the unit in liquid. Do not use abrasive cleaners or metal‑scouring pads, which may scratch the ceramic coating.
Pre‑use inspection: Before each use, inspect the power cord and plug for any damage. Ensure the work plate is clean, dry, and free of chemical residues. Verify that the area is clear of flammable materials and that the instrument has adequate clearance (at least 10 cm) for heat dissipation. Check that the stir bar is in good condition without chips or cracks.
Operation (General): Turn on the main power. Place the stirring vessel (e.g., a beaker or 500 mL round‑bottom flask) centrally on the work plate and add the magnetic stir bar (maximum length 80 mm). Set the desired temperature (using the digital controls, 1 °C increments) and stirring speed (100–1500 rpm) via the instrument’s digital control panel. The LCD display will show the actual temperature and speed. Always start stirring at a low speed (100–300 rpm) to allow the stir bar to couple correctly before gradually increasing to the target speed.
Operation with external sensor (PT1000, optional accessory): If using the optional PT1000 external temperature sensor, insert the sensor probe into the sample vessel and secure it with a suitable stand and clamp (sold separately). Do not allow the sensor cable to contact the hot work plate, as this may melt the wire insulation and cause sensor failure or an electrical hazard.
Operation – Heating Mode Selection: The instrument offers three selectable heating modes – fast heating (rapid ramp‑up with some overshoot), standard heating (balanced ramp‑up and overshoot), and stable heating (slow ramp‑up with minimal overshoot). Choose the appropriate mode based on the application’s sensitivity to temperature overshoot.
Timer operation: Program the timer for the desired heating and stirring duration. When the timer reaches zero, the unit stops heating but continues stirring (if stirring was enabled), and the buzzer sounds. Press any button to silence the buzzer. The timer can also be deactivated if not needed.
Cooling down: After use, turn off the main power and allow the work plate to cool completely. Cooling time may take 30–60 minutes, depending on the operating temperature. Do not attempt to move, clean, or store the instrument until the “HOT” residual heat warning indicator has stopped flashing and the plate has cooled to a safe temperature.
Periodic verification: Verify the temperature accuracy periodically using a calibrated external thermometer or thermocouple. If deviation from the setpoint exceeds the specified tolerance (±1 °C (<100 °C) or ±1 % (>100 °C)), consult the manufacturer’s service guidelines for recalibration.

6. LABORATORY & CLINICAL APPLICATIONS

Primary Application: General‑purpose, precise heating and stirring for clinical diagnostics (trace element digestion for heavy metal testing – blood lead, urine cadmium, heavy metals), pharmaceutical quality control, analytical chemistry (reflux, distillation), food and feed safety analysis, environmental testing, and academic research laboratories where precise, safe, and uniform heating up to 340 °C with reliable stirring is required.
Clinical Role: A versatile, essential bench‑level instrument for hospital and clinical chemistry laboratories, toxicology departments (heavy metal testing for blood lead, urine cadmium), pharmaceutical R&D and quality control, analytical chemistry departments, environmental testing stations, food safety laboratories, and research institutions. Critical for small‑batch sample digestion, 20‑litre capacity quality control sample preparation (buffers, standards), culture media preparation (agars, broths), and any application where precise, safe, and versatile heating with stirring is mandatory for diagnostic accuracy, regulatory compliance, and laboratory efficiency.

SAFETY HANDLING PRECAUTIONS

1. SAFETY PRECAUTIONS

Burn Hazard: The ceramic‑coated aluminium work plate can reach 340 °C and remains hot for an extended period after the power is turned off. Do not touch the work plate for at least 30‑60 minutes after use, or until the residual heat “HOT” indicator stops flashing. Use appropriate heat‑resistant gloves or tools when handling vessels on the hot plate. The “HOT” warning continues even after the unit is turned off (if still connected to mains) until the plate cools below 50 °C – always verify the indicator has stopped flashing before touching the plate.
Fire Hazard: Do not operate the hotplate stirrer near flammable materials, volatile solvents, combustible gases or paper products. Keep the work area clear of flammable substances. The heating temperature must be set at least 50 °C lower than the ignition point of the chemicals being used. Do not leave the instrument unattended while operating at high temperatures without appropriate safety protocols. The independent safety circuit (420 °C cut‑off) provides backup protection but should not replace operator vigilance.
Magnetic Field Interference: The stirrer contains strong permanent magnets. People with implanted medical devices (e.g., pacemakers, implantable cardioverter‑defibrillators, neurostimulators) should keep a safe distance of at least 30 cm from the operating stirrer. Do not place the instrument near credit cards, hard drives, computer monitors or other magnetic‑sensitive equipment.
Vessel and Stir Bar Selection: Use only flat‑bottomed vessels (beakers, Erlenmeyer flasks, crystallising dishes) that sit flush on the ceramic‑coated work plate. Ensure the magnetic stir bar is in good condition without chips, cracks or deformities and is properly centred in the vessel before starting. Do not exceed the maximum stir bar length of 80 mm.
Start Stirring Slowly (Smooth Start): Always start stirring at the lowest speed (100 rpm) and gradually increase to the desired level. A sudden high‑speed start may cause the stir bar to decouple, spin erratically or strike the vessel wall, leading to splashing, spillage or vessel breakage.
Electrical Safety: Do not operate the instrument with wet hands. Ensure the mains power cable does not come into contact with liquids or sharp edges that could damage the insulation. Use only the supplied grounded power cord and ensure the outlet provides proper grounding. Disconnect the power cord before cleaning, servicing or moving the unit. Do not operate if the power cord is damaged. The IP21 rating offers basic protection against vertically falling water drops but does not protect against immersion or significant liquid spills.
Chemical Compatibility: The ceramic‑coated aluminium work plate is resistant to strong acids, strong alkalis and organic solvents. However, prolonged exposure to some concentrated mineral acids (e.g., hydrofluoric acid, concentrated sulfuric acid) or aggressive organic solvents may degrade the coating. Clean spills promptly. Refer to the Safety Data Sheet (SDS) for specific chemicals. Never heat sealed vessels or containers that cannot vent pressure, as explosion may result.
Spill Management: If a liquid spill occurs on the work plate during operation, turn off the heating and stirring functions immediately. Unplug the unit, allow the plate to cool (if heated) and wipe the spill clean with a soft, damp cloth. Do not let liquids seep under the work plate or into the housing. The IP21 rating does not protect against pooling liquids or immersion.
Operating Environment: Use the LCD Digital Heating Magnetic Stirrer (DLAB MS‑H‑ProA) indoors only, on a stable, level, non‑flammable laboratory benchtop. Do not use in explosive atmospheres or in the presence of flammable gases or vapours. The permissible ambient temperature range is 5‑40 °C with relative humidity not exceeding 80 %. Allow at least 10 cm clearance on all sides for proper heat dissipation and ventilation.
External PT1000 Sensor Safety: When using the optional PT1000 external temperature sensor, insert the sensor probe into the sample vessel and secure it with a suitable stand and clamp. Do not allow the sensor cable to contact the hot work plate, as this may melt the wire insulation and cause sensor failure, electrical hazard or burns. If the sensor is disconnected or fails during operation (indicated by an error code on the LCD), the heating mode will automatically shut down as a safety precaution. Always inspect the sensor cable for damage before use.
Timer and Unattended Operation: The programmable timer can be used for unattended operation (e.g., overnight digestions). When the timer reaches zero, the unit automatically stops heating but continues stirring, preventing thermal degradation of samples but does not eliminate the risk of fire or electrical fault. Always verify that the timer is correctly set and that the work area is free of flammable materials before initiating unattended operation. Do not rely solely on the timer for safety; periodically check the instrument when running extended protocols.
Cleaning and Maintenance: Unplug the unit and allow the work plate to cool completely (verify “HOT” indicator has stopped flashing) before cleaning. Wipe the ceramic‑coated work plate and the metal housing with a soft, damp cloth using a mild laboratory detergent or 70 % isopropyl alcohol. Do not immerse the unit in liquid. Do not use abrasive cleaners, metal scouring pads or sharp objects that could scratch the ceramic coating. The brushless DC motor requires no routine maintenance, but periodically inspect the power cord and the condition of the work plate for signs of wear or chemical damage.
Over‑Temperature and Short‑Circuit Protection: The instrument has dual independent safety circuits. If the work plate exceeds 420 °C, the unit will automatically stop heating and display an error message. If a short‑circuit is detected, the second safety circuit will cut off power. While these features provide redundancy, they are not a substitute for proper laboratory safety practices. Do not disable or bypass any safety features.
Training Requirement: Only trained laboratory personnel with appropriate technical background in hotplate stirrer operation should operate the MS‑H‑ProA for clinical diagnostic or research applications. Users must read and understand the operator’s manual before first use. Laboratory managers should ensure all operators are aware of the proper procedure for starting and stopping stir bars and of the specific safety considerations for heating and stirring hazardous materials.

2. FIRST AID MEASURES

Burn from Hot Surface: If skin contacts the hot work plate or a hot vessel, immediately cool the burn area with cool (not cold) running water for at least 15 minutes. Do not apply ice directly. Remove any jewellery or constrictive items from the affected area. Cover the burn with a sterile, non‑adhesive dressing. Seek medical attention for large‑area burns (larger than the palm of the hand), deep burns (white or charred appearance) or burns causing blistering. For burns on the face, hands, feet or genitals, seek immediate medical attention.
Fire: If a fire occurs on or near the instrument, immediately turn off the power if safe to do so. Use a class ABC dry chemical fire extinguisher or carbon dioxide (CO₂) extinguisher. Do not use water on electrical fires. Evacuate the immediate area if the fire cannot be immediately controlled. Call emergency services.
Chemical Splash to Eyes: If a heated chemical sample or reagent splashes into the eyes, immediately flush the eyes with copious amounts of cool water or sterile saline for at least 15 minutes. Hold the eyelids open to ensure thorough rinsing. Remove contact lenses if present and easily removable. Seek immediate medical attention. Do not attempt to neutralise the chemical in the eye.
Chemical Splash to Skin: Remove contaminated clothing immediately. Flush the affected skin area with cool running water for at least 15 minutes. Do not rub or scrub. Seek medical evaluation for chemical burns or if irritation persists. Refer to the Safety Data Sheet (SDS) for the specific chemical involved.
Inhalation of Fumes: If fumes from heated chemicals are inhaled, move the affected person to fresh air immediately. Keep the person warm and at rest. If breathing is difficult, administer oxygen if trained. If breathing stops, perform CPR. Seek immediate medical attention.
Electrical Shock: If an electrical shock incident occurs, disconnect power at the circuit breaker before attempting to assist the victim. Do not touch the victim until the power is disconnected. Once safe, assess the victim for responsiveness and breathing. Call emergency medical services immediately. Perform CPR if trained and necessary. Seek medical evaluation for all electrical shock victims, even if symptoms appear mild.

3. FIRE FIGHTING MEASURES

Flammability: The instrument’s metal housing is non‑flammable, but the power cord, internal wiring, electronic components and plastic control elements are combustible. The ceramic‑coated work plate is non‑flammable. The primary fire hazard is the flammable chemicals, solvents or materials being heated or stirred.
Extinguishing Media: Use carbon dioxide (CO₂), dry chemical (ABC class) or alcohol‑resistant foam extinguishers for fires involving the electrical components or nearby flammable materials. Do not use water on electrical fires, as water conducts electricity and can cause electrical shock or damage the instrument.
Fire Response: Immediately disconnect power to the instrument at the circuit breaker if safe to do so. Evacuate the immediate area. Use an appropriate fire extinguisher for small, contained fires. For larger fires, evacuate the laboratory and call emergency services. Do not attempt to extinguish a fire if not trained or if the fire is spreading rapidly.
Special Protective Equipment for Firefighters: Firefighters should wear self‑contained breathing apparatus (SCBA) and full structural firefighting gear (including gloves, boots, helmet and turnout coat) when fighting fires in laboratory settings, as combustion products may include toxic fumes from burning plastics, chemicals and electrical components.

LCD Digital Heating Magnetic Stirrer (DLAB MS‑H‑ProA)

LCD Digital Heating Magnetic Stirrer (DLAB MS-H-ProA)

PRIMARY CLINICAL & DIAGNOSTIC USES

SECONDARY & SUPPORTIVE USES

2. Dissolution testing and early‑stage drug development: Offers precise heating to simulate dissolution test conditions for solid dosage forms (tablets, capsules) in beakers, and enables accelerated stability testing of new chemical entities at elevated temperatures [11†L28-L29].

5. Protein denaturation and enzyme inactivation in biochemistry: Heats protein solutions in flasks to temperatures above 70 °C to completely denature enzymes and coagulate proteins, stopping enzymatic reactions for downstream protein purification and enzyme assay workflows [9†L15-L16].

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A programmable, high‑precision LCD digital heating magnetic stirrer (digital hotplate stirrer) with a round ceramic‑coated work plate.

Designation: MS‑H‑ProA LCD Digital Heating Magnetic Stirrer; DLAB MS‑H‑ProA; LCD Digital Magnetic Hotplate Stirrer.

Catalog Number: 8060221110.

Key Components:

5‑inch (φ135 mm), high‑polish, ceramic‑coated aluminum work plate – fast, uniform heating and extreme chemical resistance

Maintenance‑free, spark‑free brushless DC motor (explosion‑proof)

High‑resolution LCD display showing actual temperature, stirring speed, and timer status in real‑time

PID temperature control technology with a 340 °C maximum heating limit

PT1000 external temperature sensor port (±0.2 °C control accuracy)

Three selectable heating modes: fast, standard, and stable (PID optimisation for slow, precise ramping)

Programmable timer (1 minute to 99 hours 59 minutes)

Independent “HOT” residual heat warning – flashes above 50 °C, continues even after power off

Dual independent safety circuits: 420 °C over‑temperature cutoff (hardware)

IP21‑rated housing (protection against solids >12.5 mm and vertically falling water drops)

RS232 data interface for remote PC control and GLP‑compliant data logging

2. TECHNICAL & PERFORMANCE PROPERTIES

Work plate dimensions: φ135 mm (5 inches).

Work plate material: Aluminum with ceramic coating (fast heat transmission, strong acid‑resistant, strong alkali‑resistant, easy to clean).

Motor type: Maintenance‑free, spark‑free brushless DC motor.

Motor rating input: 18 W.

Motor rating output: 10 W.

Stirring capacity (H₂O): Up to 20 litres.

Speed range: 100 to 1500 rpm (adjustable in 1 rpm increments).

Speed display accuracy: ±1 rpm.

Heating temperature range: Room temperature to 340 °C (adjustable in 1 °C increments).

Temperature control accuracy (plate surface): ±1 °C (<100 °C), ±1 % (>100 °C).

Temperature display accuracy: ±0.1 °C.

External temperature sensor (PT1000) accuracy: ±0.2 °C.

Heating output power: 600 W.

Total power consumption: 720 W.

Over‑temperature protection: 420 °C hardware cutoff.

Residual heat warning: Independent indicator; activates when plate temperature exceeds 50 °C and continues flashing even after the unit is powered off (if still connected to mains) until the plate cools below 50 °C.

Timer range: 1 minute to 99 hours 59 minutes.

Number of stirring positions: 1.

Maximum stir bar length: 80 mm.

Data interface: RS232.

Protection class: IP21.

Power requirements: 100–120 V / 200–240 V, 50/60 Hz (universal input, user‑selectable by region).

Dimensions (W × D × H): 280 × 160 × 100 mm.

Weight: 2.8 kg.

Operating conditions: 5–40 °C, ≤80 % relative humidity.

Certifications: TÜV‑certified (CE, cTUVus, FCC); meets DIN/EN 60529 (IP code), IEC/EN 61010‑1 safety requirements for laboratory electrical equipment.

3. PHYSICAL & OPERATIONAL PROPERTIES

Work plate: 5‑inch (φ135 mm) high‑polish aluminum disc with ceramic coating, providing fast and uniform heat distribution, strong chemical resistance, and easy cleaning [8†L9-L9].

Display: High‑contrast LCD digital display simultaneously shows actual temperature, set temperature, stirring speed, and timer status in real‑time, providing complete operational visibility without toggling between parameters [8†L9-L10].

Operation: Simple, intuitive digital controls with dedicated buttons for temperature, speed, and timer programming. Incremental 1 °C temperature adjustment and 1 rpm speed resolution allow precise setting of experimental parameters [7†L16-L17].

Heating technology: PID controller ensures stable, overshoot‑free temperature regulation (with or without the external PT1000 sensor). The three heating modes (fast, standard, stable) allow users to select the optimal heating profile for different applications [8†L10-L11].

Stirring system: Powerful rare‑earth magnets (included with the ceramic‑coated plate) and brushless DC motor provide strong magnetic coupling, preventing stir bar decoupling even with viscous liquids or at high speeds. The motor is ultra‑quiet, low‑vibration, and spark‑free [6†L16-L17].

Safety functions:

420 °C over‑temperature protection (hardware cutoff): A separate thermal cut‑off sensor shuts down heating if the work plate exceeds 420 °C, preventing runaway heating, fire hazards, and sample destruction even if the primary control system fails [6†L8-L8].

IP21 protection class: The IP21‑rated housing (DIN/EN 60529) provides protection against solid foreign objects >12.5 mm and vertically falling water drops (basic splash protection), ensuring reliable service in busy laboratory environments [6†L9-L9].

Data connectivity: RS232 interface allows remote PC control and logging of temperature and speed data via computer software (e.g., DLAB StirPC), enabling full experiment documentation and integration into automated laboratory workflows [8†L11-L12].

Spill protection: IP21‑rated metal housing offers protection against solid foreign objects >12.5 mm and vertically falling water drops. The ceramic‑coated work plate is chemical‑resistant and easy to clean.

Portability: Compact benchtop design with a small footprint of 280 × 160 mm and light weight (2.8 kg), easily moved between workstations [6†L3-L4].

Maintenance: The brushless DC motor is maintenance‑free, requiring no routine brush replacement or lubrication. The ceramic‑coated aluminum work plate is easy to clean with a mild detergent and soft, damp cloth [6†L16-L17].

4. SAFETY & COMPLIANCE ATTRIBUTES

Regulatory Status: General laboratory equipment for in vitro diagnostic (IVD) use. Manufactured under ISO 9001 and ISO 13485 quality management systems. TÜV‑certified safety: CE, cTUVus, FCC.

Over‑temperature Protection (Hardware): 420 °C hardware cutoff prevents runaway heating and fire hazards, even if the primary control system fails [6†L8-L8].

Chemical Safety: The ceramic‑coated aluminum work plate is resistant to strong acids, strong alkalis, and organic solvents, preventing corrosion and ensuring a long service life even when handling aggressive reagents such as concentrated nitric acid for sample digestion [7†L17-L17].

Fire Safety: Metal housing, ceramic‑coated work plate, and IP21‑rated construction provide good fire protection and heat dissipation.

Quality Assurance: Each instrument is factory‑calibrated. The unit is supplied with a calibration certificate and is backed by the manufacturer’s 2‑year warranty.

5. STORAGE & HANDLING ATTRIBUTES

Storage: Store the instrument in a clean, dry, dust‑free environment at room temperature (15–30 °C) when not in use. Allow the unit to cool completely (verify “HOT” indicator is off) before storage.

Timer operation: Program the timer for the desired heating and stirring duration. When the timer reaches zero, the unit stops heating but continues stirring (if stirring was enabled), and the buzzer sounds. Press any button to silence the buzzer. The timer can also be deactivated if not needed.

Periodic verification: Verify the temperature accuracy periodically using a calibrated external thermometer or thermocouple. If deviation from the setpoint exceeds the specified tolerance (±1 °C (<100 °C) or ±1 % (>100 °C)), consult the manufacturer’s service guidelines for recalibration.

6. LABORATORY & CLINICAL APPLICATIONS

1. SAFETY PRECAUTIONS

Start Stirring Slowly (Smooth Start): Always start stirring at the lowest speed (100 rpm) and gradually increase to the desired level. A sudden high‑speed start may cause the stir bar to decouple, spin erratically or strike the vessel wall, leading to splashing, spillage or vessel breakage.

2. FIRST AID MEASURES

Inhalation of Fumes: If fumes from heated chemicals are inhaled, move the affected person to fresh air immediately. Keep the person warm and at rest. If breathing is difficult, administer oxygen if trained. If breathing stops, perform CPR. Seek immediate medical attention.

3. FIRE FIGHTING MEASURES

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5‑inch (φ135 mm), high‑polish, ceramic‑coated aluminum work plate – fast, uniform heating and extreme chemical resistance

PID temperature control technology with a 340 °C maximum heating limit

PT1000 external temperature sensor port (±0.2 °C control accuracy)

Programmable timer (1 minute to 99 hours 59 minutes)

Independent “HOT” residual heat warning – flashes above 50 °C, continues even after power off

Dual independent safety circuits: 420 °C over‑temperature cutoff (hardware)

IP21‑rated housing (protection against solids >12.5 mm and vertically falling water drops)

Work plate dimensions: φ135 mm (5 inches).

Motor rating input: 18 W.

Motor rating output: 10 W.

Stirring capacity (H₂O): Up to 20 litres.

Speed range: 100 to 1500 rpm (adjustable in 1 rpm increments).

Speed display accuracy: ±1 rpm.

Heating temperature range: Room temperature to 340 °C (adjustable in 1 °C increments).

Temperature control accuracy (plate surface): ±1 °C (<100 °C), ±1 % (>100 °C).

Temperature display accuracy: ±0.1 °C.

External temperature sensor (PT1000) accuracy: ±0.2 °C.

Heating output power: 600 W.

Total power consumption: 720 W.

Over‑temperature protection: 420 °C hardware cutoff.

Residual heat warning: Independent indicator; activates when plate temperature exceeds 50 °C and continues flashing even after the unit is powered off (if still connected to mains) until the plate cools below 50 °C.

Timer range: 1 minute to 99 hours 59 minutes.

Maximum stir bar length: 80 mm.

Power requirements: 100–120 V / 200–240 V, 50/60 Hz (universal input, user‑selectable by region).

Dimensions (W × D × H): 280 × 160 × 100 mm.

Weight: 2.8 kg.

Operating conditions: 5–40 °C, ≤80 % relative humidity.

Certifications: TÜV‑certified (CE, cTUVus, FCC); meets DIN/EN 60529 (IP code), IEC/EN 61010‑1 safety requirements for laboratory electrical equipment.

Work plate: 5‑inch (φ135 mm) high‑polish aluminum disc with ceramic coating, providing fast and uniform heat distribution, strong chemical resistance, and easy cleaning [8†L9-L9].

Operation: Simple, intuitive digital controls with dedicated buttons for temperature, speed, and timer programming. Incremental 1 °C temperature adjustment and 1 rpm speed resolution allow precise setting of experimental parameters [7†L16-L17].

420 °C over‑temperature protection (hardware cutoff): A separate thermal cut‑off sensor shuts down heating if the work plate exceeds 420 °C, preventing runaway heating, fire hazards, and sample destruction even if the primary control system fails [6†L8-L8].

IP21 protection class: The IP21‑rated housing (DIN/EN 60529) provides protection against solid foreign objects >12.5 mm and vertically falling water drops (basic splash protection), ensuring reliable service in busy laboratory environments [6†L9-L9].

Spill protection: IP21‑rated metal housing offers protection against solid foreign objects >12.5 mm and vertically falling water drops. The ceramic‑coated work plate is chemical‑resistant and easy to clean.

Portability: Compact benchtop design with a small footprint of 280 × 160 mm and light weight (2.8 kg), easily moved between workstations [6†L3-L4].

Regulatory Status: General laboratory equipment for in vitro diagnostic (IVD) use. Manufactured under ISO 9001 and ISO 13485 quality management systems. TÜV‑certified safety: CE, cTUVus, FCC.

Over‑temperature Protection (Hardware): 420 °C hardware cutoff prevents runaway heating and fire hazards, even if the primary control system fails [6†L8-L8].

Storage: Store the instrument in a clean, dry, dust‑free environment at room temperature (15–30 °C) when not in use. Allow the unit to cool completely (verify “HOT” indicator is off) before storage.

Start Stirring Slowly (Smooth Start): Always start stirring at the lowest speed (100 rpm) and gradually increase to the desired level. A sudden high‑speed start may cause the stir bar to decouple, spin erratically or strike the vessel wall, leading to splashing, spillage or vessel breakage.