LCD Digital 4‑Channel Hotplate Magnetic Stirrer Amaris Chemical

LCD Digital 4‑Channel Hotplate Magnetic Stirrer (MS‑H340‑S4)

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The DLAB LCD Digital 4‑Channel Hotplate Magnetic Stirrer is a modular, high‑throughput benchtop platform engineered for the true parallel processing of up to four independent heating and stirring reactions in clinical diagnostics, pharmaceutical quality control, analytical chemistry, food and feed analysis, environmental testing, and academic research laboratories.

Featuring four independent ceramic‑coated stainless steel work plates (Ø135 mm each), the LCD Digital 4‑Channel Hotplate Magnetic Stirrer provides each channel with its own PID temperature control (25–340 °C, 1 °C increments), stirring speed control (200–1500 rpm, ±20 rpm accuracy), and dedicated high‑resolution LCD display for independent real‑time monitoring of temperature and speed. The single‑position stirring capacity is 10 L of water (40 L total) per channel. The PT1000 external temperature sensor ports (±0.2 °C accuracy) enable precise closed‑loop control of the actual sample liquid temperature on each channel.

Key user‑focused features for high‑throughput applications include true independent control of start/stop, temperature, speed, and display for each channel (parallel experiment control); four independent maintenance‑free, spark‑free brushless DC motors for extended life and low‑noise operation; ceramic‑coated stainless steel work plates with fast heat transmission and strong chemical resistance; and space‑saving design (698 × 270 × 128 mm, 9.5 kg) with 4 channels integrated into a single instrument—dramatically reducing bench space compared to four separate single‑channel units.

Safety is exemplary with TÜV certification (CE, cTUVus, FCC), an independent residual heat warning indicator (“HOT” flashes on each respective channel display at >50 °C and continues even after the unit is turned off, including unplugged, until each plate is safe to touch), independent over‑temperature protection (420 °C hardware cutoff per channel), and IP21‑rated dust/water ingress protection with an aluminum alloy housing for chemical resistance and excellent heat dissipation.

For the clinical laboratory scientist, trace element analyst, pharmaceutical QC chemist, food and feed analyst, and research scientist, the LCD Digital 4‑Channel Hotplate Magnetic Stirrer delivers the modular versatility, independent 4‑channel processing capacity, high‑temperature performance (up to 340 °C), and high safety required for parallel‑batch sample digestion for trace element analysis (blood lead, urine cadmium, heavy metals), multi‑condition dissolution testing, Kjeldahl nitrogen determination, Soxhlet extraction workflows, and multi‑parameter optimisation. For the patient, the reliable and reproducible performance of this high‑throughput instrument ensures that diagnostic tests and pharmaceutical products are accurate and efficient, directly supporting effective clinical decision‑making, appropriate treatment selection, and patient safety.

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Description

LCD Digital 4‑Channel Hotplate Magnetic Stirrer

PRIMARY CLINICAL & DIAGNOSTIC USES

1. High‑Throughput Parallel Processing for Clinical and Pharmaceutical Research
Primary Use: Provides LCD Digital 4‑Channel Hotplate Magnetic Stirrer with independent control of heating, stirring, and display for each of its four 135 mm ceramic‑coated stainless steel work plates, used for the simultaneous heating and mixing of up to four separate clinical samples, reagents, buffers, or biological specimens in parallel. It features a single‑position stirring capacity of 10 L (water) per channel (40 L total), a speed range of 200 to 1500 rpm per channel, and a heating temperature range from 25 °C to 340 °C in 1 °C increments, with each channel having its own clear LCD display for independent parameter monitoring.

How it helps: For the clinical pharmaceutical research scientist and high‑throughput laboratory technician, the LCD Digital 4‑Channel Hotplate Magnetic Stirrer’s four‑channel design enables the parallel processing of up to four different experiments or conditions simultaneously—dramatically increasing throughput while maintaining reproducibility. Each heating surface can be independently set to a different temperature, stirring speed, start/stop status, and display. The ceramic‑coated stainless steel work plates provide excellent chemical resistance and fast, uniform heat transmission. The PID temperature control technology ensures real‑time precise control of the heating process across all positions. For the patient undergoing diagnostic testing or receiving pharmaceutical products, the ability to rapidly process multiple samples under controlled, reproducible conditions helps ensure accurate and timely test results, directly supporting effective clinical decision‑making.

2. Parallel Digestion for High‑Volume Trace Element Analysis and Clinical Sample Preparation
Primary Use: Used for the controlled digestion of up to four independent patient samples (e.g., serum, whole blood, urine, or tissue homogenates) in strong acids at temperatures up to 340 °C, prior to trace element analysis by atomic absorption spectroscopy (AAS) or inductively coupled plasma mass spectrometry (ICP‑MS). The built‑in PT1000 external temperature sensor ports (±0.2 °C accuracy) enable precise closed‑loop control of the actual sample temperature across each channel.

How it helps: For the trace element analyst processing a high volume of patient samples in toxicology and occupational health screening, the 4‑channel design supports the simultaneous digestion of up to four separate specimens in a single run, significantly reducing total preparation time. The PT1000 external temperature sensor enables the instrument to regulate the actual temperature of the acid digest directly (±0.2 °C accuracy), ensuring complete, uniform oxidation of organic matrices even in demanding trace element analysis applications. The PID control technology provides real‑time precise control of the heating process. For the patient undergoing heavy metal screening (e.g., lead, mercury, cadmium) or nutritional deficiency monitoring, the accurate, controlled digestion achieved with the LCD Digital 4‑Channel Hotplate Magnetic Stirrer results in precise and reliable clinical measurements, directly supporting correct diagnosis and treatment.

3. Simultaneous Preparation of Culture Media and Quality Control Standards for Clinical Microbiology
Primary Use: Enables the safe, uniform heating and melting of solid or semi‑solid culture media, nutrient agars, and agarose gels in up to four vessels simultaneously, as well as the preparation of temperature‑sensitive standard solutions and buffers for high‑throughput molecular diagnostics and quality control workflows. The four independent work plates can accommodate various heating blocks or reaction vessels for a wide range of application scenarios.

How it helps: For the clinical molecular biologist and microbiology technologist processing large numbers of patient samples, the four‑channel capacity supports the preparation of multiple media types or test conditions in a single run without cross‑contamination. The ceramic‑coated stainless steel work plates withstand aggressive media components and provide uniform heat distribution, while the independent channel design prevents cross‑contamination between different media types. The instrument can be used concurrently for multiple reaction needs, improving laboratory efficiency. For the patient, correctly prepared, homogeneous media in sufficient volume ensures that bacterial identification and molecular diagnostic testing for infectious diseases are accurate, timely, and reproducible across a high number of patient specimens.

4. Enhanced Safety Features for Unattended Operation in Clinical QC and Research Laboratories
Primary Use: The 4‑channel instrument incorporates dual independent safety systems: an independent residual heat warning that flashes a “HOT” alert on each LCD display when any work plate exceeds 50 °C (continuing even after power off) and an independent over‑temperature protection circuit that automatically stops heating when any work plate exceeds 420 °C. The brushless DC motors are spark‑free and maintenance‑free, making the instrument safe for use in environments where flammable solvents may be present.

How it helps: For the laboratory manager and quality assurance supervisor, the independent channel‑level safety features enable safe unattended operation of multiple parallel experiments without constant monitoring. The “HOT” warning alerts users to dangerously hot surfaces even after the instrument is turned off and unplugged, protecting against delayed‑onset burns. The 420 °C hardware cutoff per channel prevents runaway heating and fire hazards even if the primary control system fails. The spark‑free brushless DC motors comply with safety regulations for use with volatile solvents, making the instrument suitable for pharmaceutical and petrochemical QC workflows. For the patient, higher laboratory safety standards and reliable unattended processing translate to fewer procedural errors across high‑volume sample runs, supporting faster, more accurate diagnostic test results.

SECONDARY & SUPPORTIVE USES

1. Kjeldahl nitrogen determination in food and feed analysis: Provides simultaneous controlled heating for digestion of up to four food, feed, textile, soil, or wastewater samples in concentrated sulfuric acid prior to nitrogen quantification at up to 340 °C, significantly reducing total processing time in quality control laboratories.

2. Soxhlet extraction workflows in polymer and environmental analysis: Enables the simultaneous extraction of up to four solid samples (e.g., polymers, rubber, plastic, sludge, treated water) with organic solvents under controlled heating conditions, improving laboratory throughput for fat, oil, and pollutant determination.

3. Parallel chemical synthesis and polymer research: Provides stable, reproducible heating and stirring for up to four independent chemical synthesis reactions, supporting pharmaceutical development, petrochemical research, and material science applications with the ability to reach 340 °C for high‑boiling‑point solvents.

4. Multi‑condition drug dissolution screening for pharmaceutical QC: Allows simultaneous screening of up to four dissolution test conditions for solid oral dosage forms (tablets, capsules) using independent beakers and heated buffer solutions, accelerating early‑stage formulation development.

5. Environmental water and soil multi‑sample digestion: Prepares up to four solid environmental samples—such as soils, sediments, and ores—by acid‑digesting them in parallel at up to 340 °C for analysis of mineral content and elemental pollutants, ensuring representative results with high throughput.

6. Pharmaceutical R&D and QC sample preparation: Supports USP/EP‑compliant testing by providing independent temperature‑controlled sample preparation for multiple drug substance or product batches simultaneously, improving quality control laboratory productivity.

7. General solution preparation and multi‑parameter optimisation in academic research: Serves as a versatile, user‑friendly teaching and research tool for undergraduate and graduate university courses in chemistry, clinical laboratory science, and biochemistry, allowing students to run multiple independent experiments on a single compact benchtop instrument.

KEY PRODUCT FEATURES

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A LCD Digital 4‑Channel Hotplate Magnetic Stirrer with independent control for each channel.
Designation: LCD Digital 4‑Channel Hotplate Magnetic Stirrer; DLAB MS‑H340‑S4; Multi‑Position Hotplate Magnetic Stirrer.
Catalogue Number: 8030271110.
Key Components:
- Four independent ceramic‑coated stainless steel work plates (Ø135 mm each) with fast heat transmission and strong chemical resistance
- Four independent maintenance‑free, spark‑free brushless DC motors (one per channel)
- Four independent high‑resolution LCD displays for separate real‑time monitoring of temperature and speed per channel
- PID temperature control technology with 25‑340 °C heating range per channel
- PT1000 external temperature sensor ports for each channel (±0.2 °C control accuracy)
- Independent channel control: start/stop, temperature, speed, and display per position
- Independent residual heat warning for each channel (“HOT” flashes on display when any plate >50 °C, even after power off)
- Dual independent safety circuits with over‑temperature protection (420 °C hardware cutoff per channel)
- IP21‑rated housing (protection against solids >12.5 mm and vertically falling water drops)
- Fully enclosed aluminum alloy housing with powder‑coated finish for heat dissipation and chemical resistance

2. TECHNICAL & PERFORMANCE PROPERTIES

Number of stirring positions: 4
Work plate dimensions (each): Ø135 mm (5 in)
Work plate material: Stainless steel with ceramic coating (strong chemical resistance, fast heat transmission)
Motor type: Brushless DC motor (maintenance‑free, spark‑free)
Motor rating input: 1.8 W × 4
Heating output power: 500 W × 4
Total power consumption: 515 W × 4
Maximum stirring quantity per channel (H₂O): 10 L (40 L total)
Maximum magnetic bar length per channel: 40 mm
Speed range per channel: 200 to 1500 rpm
Speed control accuracy: ±20 rpm
Speed display: Independent LCD display per channel
Heating temperature range: 25 °C to 340 °C (adjustable in 1 °C increments per channel)
Temperature display accuracy: ±0.1 °C per channel
Temperature control accuracy (plate surface): ±1 °C (<100 °C), ±1 % (>100 °C) per channel
External temperature sensor (PT1000) accuracy: ±0.2 °C per channel
Over‑temperature protection: 420 °C hardware cutoff (independent safety circuits per channel)
Residual heat warning: Activates for each channel above 50 °C; “HOT” flashes on each respective LCD display even when unit is powered off
Power requirements: 100–120 V, 60 Hz / 200–240 V, 50 Hz (universal input, user‑selectable by region)
Protection class: IP21
Dimensions (W × D × H): 698 × 270 × 128 mm
Weight: 9.5 kg
Operating conditions: 5–40 °C, ≤80 % relative humidity
Certifications: TÜV‑certified (CE, cTUVus, FCC); complies with DIN/EN 60529 (IP code), IEC/EN 61010‑1 safety requirements

3. PHYSICAL & OPERATIONAL PROPERTIES

Construction: Durable, fully enclosed aluminum alloy housing with a powder‑coated finish for excellent heat dissipation and chemical resistance. The four independent ceramic‑coated stainless steel work plates are each designed for rapid, uniform heat transfer and strong resistance to corrosion. IP21‑rated housing provides basic protection against solid foreign objects (>12.5 mm) and vertically falling water drops.
Work plates: Four independent Ø135 mm (5‑inch) ceramic‑coated stainless steel discs, each providing fast heat transmission, strong corrosion resistance, and easy cleaning. The separate plates prevent cross‑contamination between channels and can accommodate a wide range of laboratory vessels, beakers, and heating blocks.
Display: Four independent high‑contrast LCD digital displays (one per channel) simultaneously show the actual temperature and stirring speed for each channel in real time, providing complete operational visibility without toggling between parameters or channels.
Operation: Simple, intuitive independent digital controls for each channel, with separate temperature setting, speed setting, and start/stop control. Each channel can be programmed with independent start/stop, temperature, speed, and display options, allowing the user to run up to four parallel experiments under different conditions simultaneously.
Motor technology: Four independent maintenance‑free, spark‑free brushless DC motors (one per channel) provide stable torque, extended life, and ultra‑quiet, vibration‑free operation. The brushless design requires no routine motor maintenance, and the spark‑free operation makes the instrument safe for use in environments where flammable solvents may be present.
Heating technology: PID temperature control technology provides real‑time precise control of the heating process. The instrument supports a heating temperature range from 25 °C to 340 °C (1 °C increments) with display accuracy of ±0.1 °C. Each channel can be heated independently, with rapid temperature ramp‑up to the set point using 500 W heating power per channel.
External sensor integration: Four independent PT1000 external temperature sensor ports (one per channel) enable direct closed‑loop control of the actual sample liquid temperature. When the optional PT1000 sensors are connected and placed in each sample vessel, 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.
Safety functions:
- Independent channel safety monitoring: Each channel is equipped with its own safety monitoring system, allowing the instrument to detect overheating, sensor failure, or electrical faults on a per‑channel basis while leaving unaffected channels operational.
- Residual heat warning (“HOT” indicator): For each channel independently, the “HOT” safety indicator activates when the respective work plate temperature exceeds 50 °C and continues flashing on the display even after the unit is turned off (including unplugged), alerting users to the dangerously hot surface until the plate is safe to touch.
- 420 °C over‑temperature protection (hardware cutoff): A separate independent safety circuit per channel 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.
- IP21 dust/water ingress protection: The fully enclosed aluminum housing with IP21 rating protects internal electronics from solid foreign objects (>12.5 mm) and vertically falling water drops.
Spill protection: IP21‑rated all‑metal housing offers protection against solid foreign objects (>12.5 mm) and vertically falling water drops. The powder‑coated aluminum alloy housing also provides protection against chemical spills and is easy to clean.
Compact footprint: Space‑saving design with 4 channels integrated into a single instrument (698 × 270 × 128 mm), significantly reducing bench space requirements compared to running four individual single‑channel instruments.
Maintenance: Each of the four brushless DC motors is maintenance‑free, requiring no routine brush replacement or lubrication. The four ceramic‑coated stainless steel work plates are easy to clean with a mild detergent and soft, damp cloth.

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, complying with DIN/EN 60529 (IP code), IEC/EN 61010‑1 safety requirements for laboratory electrical equipment.
Residual Heat Warning: The “HOT” safety indicator for each channel activates when the respective work plate exceeds 50 °C and continues flashing on the display even after the unit is turned off (including unplugged). This independent channel warning alerts users to a dangerously hot surface until the plate is safe to touch.
Over‑temperature Protection (Hardware): 420 °C hardware cutoff per channel prevents runaway heating and fire hazards, even if the primary control system fails. An independent safety circuit is dedicated to monitoring the heating function.
Chemical Safety: The four ceramic‑coated stainless steel work plates are 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.
Fire Safety: Fully enclosed aluminum alloy housing, ceramic‑coated stainless steel work plates, and powder‑coated finish provide excellent fire protection and heat dissipation.
Electrical Safety: Designed with four independent brushless, spark‑free DC motors (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.
Quality Assurance: Each instrument is factory‑calibrated. The instrument is supplied with a calibration certificate and is backed by the manufacturer’s 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 all channels to cool completely (verify each channel’s “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 all work plates to cool completely before cleaning. Wipe each ceramic‑coated stainless steel work plate and the aluminum alloy 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 all four work plates are clean, dry, and free of chemical residues. Verify that the correct heating blocks or vessels are properly seated on each channel. Check that the area is clear of flammable materials and that the instrument has adequate clearance (at least 10 cm) for heat dissipation.
Operation: For each channel independently: Place a stirring vessel (e.g., a beaker) centrally on the respective work plate and add a magnetic stir bar (maximum 40 mm length). Turn on the main power. Set the desired temperature (using the temperature control) and stirring speed (200–1500 rpm) via each channel’s independent digital controls. The independent LCD display for that channel will show the actual temperature and speed. Always start stirring at a low speed (200–300 rpm) to allow the stir bar to couple correctly before gradually increasing to the target speed.
Operation with external sensors (PT1000, optional accessories): For precise sample temperature control on any channel, insert a PT1000 temperature sensor probe into the sample vessel on that channel and secure it with a suitable stand and clamp (sold separately). Do not allow any sensor cable to contact the hot work plate of its respective channel.
Independent channel operation: Each channel can be run independently. For example, Channel 1 can be set to heat to 100 °C and stir at 800 rpm, while Channel 2 heats to 200 °C and stirs at 500 rpm, Channel 3 operates as a stirrer only (no heat), and Channel 4 is turned off. This true independent parallel processing capability dramatically improves laboratory productivity.
Cooling down: After use, turn off the main power and allow all work plates 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 each channel’s residual heat warning (“HOT”) indicator has stopped flashing and the plates have cooled to a safe temperature.
Periodic verification: Verify the temperature accuracy periodically using a calibrated external thermometer or thermocouple for each channel independently. If deviation for any channel exceeds the specified tolerance (±1 °C <100 °C or ±1 % >100 °C), consult the manufacturer’s service guidelines for recalibration of that channel.

6. LABORATORY & CLINICAL APPLICATIONS

Primary Application: General‑purpose, 4‑channel independent heating and stirring for clinical diagnostics (trace element digestion for heavy metal testing, blood lead, urine cadmium), pharmaceutical quality control (parallel dissolution testing, multi‑sample preparation), analytical chemistry (reflux, distillation, Kjeldahl nitrogen determination), food and feed analysis, environmental testing, and academic research laboratories where multi‑parameter optimisation and truly independent parallel reaction control is required.
Clinical Role: A versatile and essential high‑throughput benchtop instrument for hospital and clinical chemistry laboratories, toxicology departments, pharmaceutical R&D and quality control, analytical chemistry departments, food and feed analysis laboratories, environmental testing stations, soil and water treatment facilities, polymer research laboratories, and research institutions. Critical for parallel‑batch sample digestion for trace element analysis at up to 340 °C, multi‑condition dissolution testing, Kjeldahl nitrogen determination, Soxhlet extraction, and any application where running up to four independent experiments concurrently under precisely controlled, reproducible heating and stirring conditions is mandatory for diagnostic accuracy, regulatory compliance, and laboratory efficiency.

SAFETY HANDLING PRECAUTIONS

1. SAFETY PRECAUTIONS

Burn Hazard — Hot Plates: Each of the four ceramic‑coated stainless steel work plates can reach 340 °C and remain hot for an extended period after the power is turned off. Do not touch any work plate for at least 30–60 minutes after use, or until the residual heat “HOT” indicator for that channel has stopped flashing. Use appropriate heat‑resistant gloves or tools when handling vessels on any hot plate. Severe burns can occur upon contact. The “HOT” warning for each channel continues even after the unit is turned off (if still connected to mains) until that specific plate cools below 50 °C — always verify the indicator on each channel has stopped flashing before touching any plate.
Fire Hazard — Avoid Flammable Materials: 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 circuits (420 °C cutoff per channel) provide backup protection but should not replace operator vigilance.
Magnetic Field Interference: Each channel 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. The combined magnetic field from four active channels may be stronger than a single‑channel device.
Channel Independence and Vessel Spacing: The four channels operate independently. Ensure that vessels placed on adjacent channels do not touch or interfere with each other. The pre‑determined channel spacing (approximately 190 mm centre‑to‑centre) allows standard beakers up to 10 L capacity, but oversized vessels may crowd adjacent positions. Always allow sufficient clearance to prevent magnetic interference between channels and to avoid accidental contact with hot plates.
Vessel and Stir Bar Selection: Use only flat‑bottomed vessels (beakers, Erlenmeyer flasks, crystallising dishes) that sit flush on the ceramic‑coated work plates. Ensure each magnetic stir bar is in good condition without chips, cracks, or deformities and is properly centered in each vessel before starting. Do not exceed the maximum stir bar length of 40 mm per channel.
Start Slowly (Smooth Start): For each channel independently, always start stirring at a low speed (200–300 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. Because the four channels are independent, slowly increase speed on each channel sequentially.
Electrical Safety — Proper Grounding: 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 — Ceramic Coating Limits: The ceramic‑coated stainless steel work plates are 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 — Prevent Liquids Entering Housing: If a liquid spill occurs on any work plate during operation, turn off the affected channel(s) immediately. Unplug the unit, allow the plate(s) to cool (if heated), and wipe the spill clean with a soft, damp cloth. Do not let liquids seep under the work plates or into the housing. The IP21 rating does not protect against pooling liquids or immersion.
Operating Environment — Clean, Stable Benchtop: Use the LCD Digital 4‑Channel Hotplate Magnetic Stirrer 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. Do not cover the instrument during operation.
External PT1000 Sensor Safety — Secure Placement: When using the optional PT1000 external temperature sensors (up to four, one per channel), insert each sensor probe into its respective sample vessel and secure it with a suitable stand and clamp (sold separately). Do not allow any sensor cable to contact the hot work plate of its channel, as this may melt the wire insulation and cause sensor failure, electrical hazard, or burns. If any sensor is disconnected or fails during operation (indicated by an error code on that channel’s LCD), the heating mode for that channel will automatically shut down as a safety precaution. Always inspect each sensor cable for damage before use.
Cleaning and Maintenance — Safe Cleaning Protocols: Unplug the unit before cleaning. Allow all work plates to cool completely (verify each channel’s “HOT” indicator has stopped flashing) before cleaning. Wipe each ceramic‑coated work plate and the aluminum alloy 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 motors require no routine maintenance, but periodically inspect the power cord and the condition of each work plate for signs of wear or chemical damage.
Over‑Temperature and Short‑Circuit Protection (Redundant Safety per Channel): Each channel has dual independent safety circuits. If any work plate exceeds 420 °C, that channel will automatically stop heating and display an error message. If a short‑circuit is detected in a channel, the second safety circuit will cut off power to that channel. While these features provide redundancy, they are not a substitute for proper laboratory safety practices. Do not disable or bypass any safety features.
Residual Heat Warning — Active Even When Off: After powering off (if the unit remains connected to mains), each channel’s “HOT” indicator may continue flashing if its plate is above 50 °C. This warning is independent of the main power switch and alerts users to dangerously hot surfaces. Always verify that all four channel indicators have stopped flashing before assuming the instrument is safe to touch or clean.
Training Requirement — Qualified Users Only: Only trained laboratory personnel with appropriate technical background in hotplate stirrer operation should operate the LCD Digital 4‑Channel Hotplate Magnetic Stirrer 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 independent channel control features, the proper procedure for starting and stopping stir bars across four channels, and the specific safety considerations for heating and stirring hazardous materials.

2. FIRST AID MEASURES

Burn from Hot Surface: If skin contacts a hot work plate or a hot vessel on any channel, 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 during operation on any channel, 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 — Primary Fire Hazard is Heated Chemicals: The instrument’s aluminum alloy housing is non‑flammable, but the power cord, internal wiring, electronic components, and plastic control elements are combustible. The ceramic‑coated work plates are non‑flammable. The primary fire hazard is the flammable chemicals, solvents, or materials being heated or stirred.
Extinguishing Media — Electrical Fires Require CO₂ or Dry Chemical: 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 — Isolate Power and Evacuate: 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 4‑Channel Hotplate Magnetic Stirrer (MS‑H340‑S4)

LCD Digital 4‑Channel Hotplate Magnetic Stirrer

PRIMARY CLINICAL & DIAGNOSTIC USES

SECONDARY & SUPPORTIVE USES

4. Multi‑condition drug dissolution screening for pharmaceutical QC: Allows simultaneous screening of up to four dissolution test conditions for solid oral dosage forms (tablets, capsules) using independent beakers and heated buffer solutions, accelerating early‑stage formulation development.

6. Pharmaceutical R&D and QC sample preparation: Supports USP/EP‑compliant testing by providing independent temperature‑controlled sample preparation for multiple drug substance or product batches simultaneously, improving quality control laboratory productivity.

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A LCD Digital 4‑Channel Hotplate Magnetic Stirrer with independent control for each channel.

Designation: LCD Digital 4‑Channel Hotplate Magnetic Stirrer; DLAB MS‑H340‑S4; Multi‑Position Hotplate Magnetic Stirrer.

Catalogue Number: 8030271110.

Key Components:

Four independent ceramic‑coated stainless steel work plates (Ø135 mm each) with fast heat transmission and strong chemical resistance

Four independent maintenance‑free, spark‑free brushless DC motors (one per channel)

Four independent high‑resolution LCD displays for separate real‑time monitoring of temperature and speed per channel

PID temperature control technology with 25‑340 °C heating range per channel

PT1000 external temperature sensor ports for each channel (±0.2 °C control accuracy)

Independent channel control: start/stop, temperature, speed, and display per position

Independent residual heat warning for each channel (“HOT” flashes on display when any plate >50 °C, even after power off)

Dual independent safety circuits with over‑temperature protection (420 °C hardware cutoff per channel)

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

Fully enclosed aluminum alloy housing with powder‑coated finish for heat dissipation and chemical resistance

2. TECHNICAL & PERFORMANCE PROPERTIES

Number of stirring positions: 4

Work plate dimensions (each): Ø135 mm (5 in)

Work plate material: Stainless steel with ceramic coating (strong chemical resistance, fast heat transmission)

Motor type: Brushless DC motor (maintenance‑free, spark‑free)

Motor rating input: 1.8 W × 4

Heating output power: 500 W × 4

Total power consumption: 515 W × 4

Maximum stirring quantity per channel (H₂O): 10 L (40 L total)

Maximum magnetic bar length per channel: 40 mm

Speed range per channel: 200 to 1500 rpm

Speed control accuracy: ±20 rpm

Speed display: Independent LCD display per channel

Heating temperature range: 25 °C to 340 °C (adjustable in 1 °C increments per channel)

Temperature display accuracy: ±0.1 °C per channel

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

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

Over‑temperature protection: 420 °C hardware cutoff (independent safety circuits per channel)

Residual heat warning: Activates for each channel above 50 °C; “HOT” flashes on each respective LCD display even when unit is powered off

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

Protection class: IP21

Dimensions (W × D × H): 698 × 270 × 128 mm

Weight: 9.5 kg

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

Certifications: TÜV‑certified (CE, cTUVus, FCC); complies with DIN/EN 60529 (IP code), IEC/EN 61010‑1 safety requirements

3. PHYSICAL & OPERATIONAL PROPERTIES

Display: Four independent high‑contrast LCD digital displays (one per channel) simultaneously show the actual temperature and stirring speed for each channel in real time, providing complete operational visibility without toggling between parameters or channels.

Safety functions:

Independent channel safety monitoring: Each channel is equipped with its own safety monitoring system, allowing the instrument to detect overheating, sensor failure, or electrical faults on a per‑channel basis while leaving unaffected channels operational.

420 °C over‑temperature protection (hardware cutoff): A separate independent safety circuit per channel 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.

IP21 dust/water ingress protection: The fully enclosed aluminum housing with IP21 rating protects internal electronics from solid foreign objects (>12.5 mm) and vertically falling water drops.

Spill protection: IP21‑rated all‑metal housing offers protection against solid foreign objects (>12.5 mm) and vertically falling water drops. The powder‑coated aluminum alloy housing also provides protection against chemical spills and is easy to clean.

Compact footprint: Space‑saving design with 4 channels integrated into a single instrument (698 × 270 × 128 mm), significantly reducing bench space requirements compared to running four individual single‑channel instruments.

Maintenance: Each of the four brushless DC motors is maintenance‑free, requiring no routine brush replacement or lubrication. The four ceramic‑coated stainless steel work plates are easy to clean with a mild detergent and soft, damp cloth.

4. SAFETY & COMPLIANCE ATTRIBUTES

Over‑temperature Protection (Hardware): 420 °C hardware cutoff per channel prevents runaway heating and fire hazards, even if the primary control system fails. An independent safety circuit is dedicated to monitoring the heating function.

Chemical Safety: The four ceramic‑coated stainless steel work plates are 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.

Fire Safety: Fully enclosed aluminum alloy housing, ceramic‑coated stainless steel work plates, and powder‑coated finish provide excellent fire protection and heat dissipation.

Quality Assurance: Each instrument is factory‑calibrated. The instrument is supplied with a calibration certificate and is backed by the manufacturer’s 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 all channels to cool completely (verify each channel’s “HOT” indicator is off) before storage.

6. LABORATORY & CLINICAL APPLICATIONS

1. SAFETY PRECAUTIONS

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

Related products

BRANDS

Four independent ceramic‑coated stainless steel work plates (Ø135 mm each) with fast heat transmission and strong chemical resistance

PID temperature control technology with 25‑340 °C heating range per channel

PT1000 external temperature sensor ports for each channel (±0.2 °C control accuracy)

Independent residual heat warning for each channel (“HOT” flashes on display when any plate >50 °C, even after power off)

Dual independent safety circuits with over‑temperature protection (420 °C hardware cutoff per channel)

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

Work plate dimensions (each): Ø135 mm (5 in)

Motor rating input: 1.8 W × 4

Heating output power: 500 W × 4

Total power consumption: 515 W × 4

Maximum stirring quantity per channel (H₂O): 10 L (40 L total)

Maximum magnetic bar length per channel: 40 mm

Speed range per channel: 200 to 1500 rpm

Speed control accuracy: ±20 rpm

Heating temperature range: 25 °C to 340 °C (adjustable in 1 °C increments per channel)

Temperature display accuracy: ±0.1 °C per channel

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

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

Over‑temperature protection: 420 °C hardware cutoff (independent safety circuits per channel)

Residual heat warning: Activates for each channel above 50 °C; “HOT” flashes on each respective LCD display even when unit is powered off

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

Dimensions (W × D × H): 698 × 270 × 128 mm

Weight: 9.5 kg

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

Certifications: TÜV‑certified (CE, cTUVus, FCC); complies with DIN/EN 60529 (IP code), IEC/EN 61010‑1 safety requirements

420 °C over‑temperature protection (hardware cutoff): A separate independent safety circuit per channel 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.

IP21 dust/water ingress protection: The fully enclosed aluminum housing with IP21 rating protects internal electronics from solid foreign objects (>12.5 mm) and vertically falling water drops.

Spill protection: IP21‑rated all‑metal housing offers protection against solid foreign objects (>12.5 mm) and vertically falling water drops. The powder‑coated aluminum alloy housing also provides protection against chemical spills and is easy to clean.

Compact footprint: Space‑saving design with 4 channels integrated into a single instrument (698 × 270 × 128 mm), significantly reducing bench space requirements compared to running four individual single‑channel instruments.

Over‑temperature Protection (Hardware): 420 °C hardware cutoff per channel prevents runaway heating and fire hazards, even if the primary control system fails. An independent safety circuit is dedicated to monitoring the heating function.

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