Plus Overhead stirrer (OS-T40)

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The Overhead Stirrer is a high-performance LCD digital timed overhead stirrer featuring a brushless DC motor (60W input / 50W output), microprocessor-controlled speed regulation (50-2200 rpm), large LCD display for real-time monitoring of set speed, actual speed, torque trend, timer, and temperature (with optional PT1000 probe), forward/reverse/intermittent mixing modes, RS485/Type-C/USB data interfaces for PC control and data logging, and programmable timer (1 minute to 99 hours 59 minutes), designed for medium to high-viscosity (up to 10,000 mPa·s) and large-volume (up to 30 liters) mixing, homogenizing, and suspending applications in clinical diagnostic, pharmaceutical, and research laboratories .

Key features include a maintenance-free, explosion-proof brushless DC motor for quiet, long-lasting operation and safe use in volatile environments; constant speed technology that automatically adjusts torque according to sample viscosity changes to maintain set speed ; through-shaft design for easy impeller height adjustment and easy container replacement ; PT1000 temperature sensor port for real-time sample temperature monitoring (accuracy ±0.2°C, display 0.1°C) ; forward, reverse, and intermittent mixing modes for optimized stirring ; programmable timer (1 min-99h59min) with audible alert for unattended operation ; safety lock to prevent accidental setting changes ; IP42 splash-resistant rating; multiple data interfaces (RS485, Type-C, USB) for PC control and LIMS integration ; torque and temperature calibration options for reproducible measurements ; and integrated power supply (no external transformer) for enhanced safety .

For the pharmaceutical formulation scientist and quality control chemist, the Plus Overhead stirrer supports mixing of creams, ointments, gels, and suspensions at batch sizes up to 30L, API dissolution testing, and large-volume buffer and media preparation. For the clinical laboratory scientist, it facilitates bulk reagent preparation for immunoassays and clinical chemistry analyzers. For the analytical chemist, it enables chemical synthesis, polymerization, and organic synthesis workflows with precise speed control and temperature monitoring.

Universal voltage (100-240V, 50/60Hz) enables use in laboratories worldwide without voltage conversion, while the compact (90 × 227 × 240 mm) and lightweight (3.5 kg) design allows easy benchtop placement . The IP42-rated splash-resistant housing ensures safe operation in biosafety cabinets and fume hoods, including handling of biohazardous materials . RS485, Type-C, and USB connectivity allow integration into automated workflows and LIMS for GLP/GMP documentation .

For the patient undergoing pharmaceutical therapy, the Plus Overhead stirrer precise speed control, constant speed technology, and torque monitoring ensure consistent formulation quality, batch-to-batch uniformity, and accurate API release testing—supporting the manufacturing of safe, effective medications. For patients requiring diagnostic testing, consistent large-volume reagent preparation reduces inter-run variability and improves the reliability of diagnostic test results across high-volume clinical chemistry, pharmaceutical QC, and analytical testing applications.

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Categories: LABORATORY EQUIPMENT AND SUPPLIES, Lab Consumables Tags: Clinical Laboratory Equipment, DLAB Plus Overhead stirrer, High Viscosity Mixer, Laboratory Stirrer, LCD Digital Timed Overhead Stirrer, Overhead Stirrer, Pharmaceutical Mixing, Programmable Stirrer, PT1000 Stirrer, Quality Control Equipment

Description

Plus Overhead stirrer

PRIMARY CLINICAL & DIAGNOSTIC USES

1. High-Precision Pharmaceutical Formulation Development

Primary Use: Provides a high-performance LCD digital timed overhead stirrer with brushless DC motor (60W input / 50W output), speed range 50-2200 rpm, and maximum viscosity handling of 10,000 mPa·s, designed for precise mixing of medium to high-viscosity pharmaceutical formulations at batch sizes up to 30 liters .
How it helps: For the pharmaceutical formulation scientist and quality control chemist, the Plus Overhead stirrer constant speed technology automatically adjusts torque according to sample viscosity changes to maintain set speed—ensuring consistent mixing of creams, ointments, gels, and suspensions for batch-to-batch uniformity . The large LCD display provides real-time monitoring of set speed, actual speed, torque, temperature (with optional PT1000 probe), and timer . For the patient, consistent pharmaceutical formulation ensures that medications deliver the correct dosage and therapeutic effect with each use.

2. Clinical Chemistry and Diagnostic Reagent Preparation

Primary Use: Capable of stirring volumes up to 30 liters (water) with maximum torque of 40 N·cm, enabling large-batch preparation of reagents, buffers, and clinical samples for diagnostic testing workflows .
How it helps: For the clinical laboratory scientist and laboratory manager, the Plus Overhead stirrer 30L capacity and programmable timer (1 minute to 99 hours 59 minutes) allow efficient preparation of bulk reagents for immunoassays, clinical chemistry analyzers, and molecular diagnostics—reducing hands-on time and ensuring batch consistency across large numbers of patient samples . For the patient, consistent reagent preparation across large batches reduces inter-run variability and improves the reliability of diagnostic test results.

3. Temperature Monitoring for Sensitive Sample Preparation

Primary Use: Features an external PT1000 temperature sensor port for direct measurement and display of sample temperature (accuracy ±0.2°C, display 0.1°C), enabling precise temperature monitoring during mixing of temperature-sensitive pharmaceutical and biological samples .
How it helps: For the pharmaceutical formulation scientist and bioprocessing specialist, thePlus Overhead stirrer temperature monitoring capability allows real-time tracking of sample temperature during mixing—critical for processes requiring precise thermal control such as enzyme reactions, protein formulations, and heat-sensitive API mixing. For the patient, temperature-controlled processing ensures that heat-sensitive biological products (vaccines, monoclonal antibodies, therapeutic proteins) maintain their efficacy and safety profile.

4. PC Control and Data Logging for GLP/GMP Compliance

Primary Use: Features RS485, Type-C, and USB data interfaces for PC control, enabling remote operation, data logging, and real-time monitoring of speed, torque, and temperature for documentation of stirring parameters to support regulatory compliance .
How it helps: For the quality assurance manager and regulatory compliance officer, the Plus Overhead stirrer multiple data interfaces allow connection to laboratory information management systems (LIMS) for traceable documentation of stirring speed, torque, duration, and temperature for each batch or sample—supporting regulatory compliance with GLP, GMP, and ISO standards . For the patient, compliant manufacturing and testing processes ensure that pharmaceutical products and diagnostic assays meet regulatory requirements for safety and efficacy.

5. Forward and Reverse Rotation for Enhanced Mixing

Primary Use: Supports forward, reverse, and intermittent mixing modes, allowing directional reversal to improve mixing efficiency and prevent material accumulation on vessel walls .
How it helps: For the formulation scientist and process engineer, the ability to reverse rotation direction helps dislodge material adhering to vessel walls, ensures complete mixing of viscous formulations, and provides intermittent mixing cycles for delicate samples. For the patient, improved mixing efficiency ensures uniform distribution of active ingredients in pharmaceutical formulations and consistent reagent composition for diagnostic tests.

SECONDARY & SUPPORTIVE USES

1. Chemical Synthesis and Organic Chemistry: Used for stirring chemical reactions in organic synthesis, polymerization, and drug discovery workflows requiring precise speed control and temperature monitoring .

2. API Dissolution Testing: Supports stirring of dissolution media for active pharmaceutical ingredient (API) release testing in pharmaceutical quality control laboratories.

3. Cosmetic and Personal Care Product Formulation: Used for mixing creams, lotions, gels, shampoos, conditioners, and emulsions in cosmetic product development and quality control at batch sizes up to 30L .

4. Food and Beverage Product Testing: Supports sample homogenization and ingredient mixing for food safety testing and nutritional analysis, including butter, tomato sauce, eggs, and sesame paste .

5. Biopharmaceutical Buffer and Media Preparation: Used for large-volume preparation of cell culture media, buffers, and purification solutions in biopharmaceutical R&D.

6. Environmental Sample Processing: Supports mixing of water, soil, and wastewater samples for pollutant analysis and environmental monitoring.

7. Paints, Coatings, and Inks Quality Control: Used for mixing and dispersion of pigments, resins, and additives in paint, coating, and ink manufacturing.

8. Materials Science and Polymer Research: Used for mixing polymer solutions, resins, and plastic additives for materials testing and quality control .

9. Adhesives and Sealants Formulation: Supports mixing of adhesives, epoxies, and sealants for product development and quality testing.

10. Research and Academic Laboratories: Provides reliable overhead stirring for diverse research applications in chemistry, biology, and materials science requiring precise mixing and data logging .

11. Veterinary Pharmaceutical Formulation: Supports mixing of veterinary drug formulations and medicated feeds for animal health testing.

12. Infection Control Disinfectant Production: Used for mixing bulk disinfectant solutions for healthcare facility infection control programs.

13. Cosmetics Manufacturing QC: Used for quality control testing of creams, ointments, shampoos, and conditioners in cosmetics manufacturing .

14. Pilot-Scale Production and Scale-Up: Used for small-batch production and scale-up studies in pharmaceutical, chemical, and food manufacturing pilot plants.

15. Food Processing and Production: Supports homogenization of food products including butter, tomato sauce, eggs, and sesame paste in food manufacturing .

16. Nano-materials Preparation: Used for nanoparticle dispersion and nanomaterial synthesis requiring precise speed control.

17. Solubility Testing for Drug Development: Supports dissolution and mixing in drug solubility studies for new pharmaceutical compounds.

18. Formulation Stability Testing: Used for mixing stability samples in pharmaceutical QC laboratories for shelf-life determination.

19. Building Materials Testing: Supports mixing of soil, mortar, clay, and stone powder for construction materials quality control .

KEY PRODUCT FEATURES

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A high-performance LCD digital timed overhead stirrer with brushless DC motor, microprocessor control, PT1000 temperature sensor port, and multiple data interfaces (RS485, Type-C, USB), designed for medium to high-viscosity (10,000 mPa·s) and large-volume (30L) mixing, homogenizing, and suspending applications in clinical diagnostic, pharmaceutical, and research laboratories .
Designation: Overhead Stirrer, LCD Digital Timed Overhead Stirrer, Laboratory Stirrer, DLAB Plus Overhead stirrer, Digital Electric Overhead Stirrer .
Key Components:

o Motor: Brushless DC motor (maintenance-free, explosion-proof, low noise) .
o Motor Power: 60W input / 50W output .
o Speed Control: Microprocessor-controlled, 50-2200 rpm, accuracy ±3 rpm .
o Display: Large LCD digital display (set speed, actual speed, torque, timer, temperature)

⚠️ Note: The search results confirm that the Plus Overhead stirrer model is real and is part of DLAB's new T-series overhead stirrer line. However, not all search results provide complete or consistent specifications—for instance, stirring capacity varies (30L vs 50L) between sources . The manufacturer's official data should be prioritized as the definitive source. Let me check: According to the manufacturer (,,), the Plus Overhead stirrer has a recommended stirring capacity of 30 liters (H₂O), confirmed by DLAB's official product listing and multiple distributor sites . The 50-liter capacity figures appear to be cross-contamination between the OS-T40-Plus and OS-T60-Plus specifications in some sources .。
o Torque Display: LCD real-time torque trend display for viscosity monitoring .
o Timer: Programmable timer 1 minute to 99 hours 59 minutes .
o Temperature Sensor: PT1000 external probe (accuracy ±0.2°C, display 0.1°C) .
o Chuck: 0.5-10 mm chuck diameter for various stirrer shafts .
o Rotation Modes: Forward, reverse, and intermittent mixing .
o Safety Features: Overload protection (LCD display), safety lock to prevent accidental setting changes, IP42 protection rating, over-temperature protection .
o Interfaces: RS485, Type-C, USB for PC control and data logging .
o Stirring Paddle: "Through-shaft" design allows easy adjustment of impeller position and easy container replacement .

2. TECHNICAL & PERFORMANCE PROPERTIES

Maximum Stirring Capacity: 30 liters (H₂O) .
Maximum Viscosity: 10,000 mPa·s .
Maximum Torque: 40 N·cm .
Speed Range: 50 – 2,200 rpm .
Motor Type: Brushless DC motor (maintenance-free, low noise, explosion-proof) .
Motor Input Power: 60W .
Motor Output Power: 50W .
Total Power Consumption: 70W .
Timer Range: 1 minute to 99 hours 59 minutes (programmable) .
Temperature Display Accuracy: 0.1°C .
External Temperature Sensor: PT1000 (accuracy ±0.2°C, measurement range 0-100°C) .
Chuck Diameter Range: 0.5 – 10 mm .
Voltage/Frequency: 100-240V, 50/60Hz (universal voltage) .
Dimensions (W × D × H): 90 × 227 × 240 mm .
Weight: 3.5 kg .
Protection Class: IP42 (splash-resistant, protection against solid objects >1mm) .
Operating Temperature: 5-40°C .
Permissible Ambient Humidity: ≤80% RH .
Rotation Modes: Forward rotation, reverse rotation, intermittent mixing .
Data Interfaces: RS485, Type-C, USB .
Safety Features: Overload protection, safety lock, IP42 rating .
Audible Alert: Buzzer sounds when timer completes or fault occurs .
Stirrer Shaft Compatibility: Through-shaft design accepts various stirrer shafts (0.5-10mm) .
Calibration: Torque and temperature calibration options .
Accessories (Sold Separately): Universal plate stand (base + rod + clamp), various stirrer impellers (cross-shaped, propeller, anchor, flat blade, PTFE-coated, 316 stainless steel) .

3. PHYSICAL & OPERATIONAL PROPERTIES

Construction: Compact benchtop design with durable housing and through-shaft chuck for easy impeller height adjustment; integrated power supply (no external transformer) for enhanced safety .
Display: Large LCD digital display shows set speed, actual speed, torque trend, timer, and temperature (with optional PT1000 probe) simultaneously; overload protection display .
Control: Microprocessor-controlled with constant speed technology; smooth acceleration; anti-spill mechanism prevents sample splashing; start/stop button; speed adjustment via rotary knob; timer programmable 1 min-99h59min .
Operation Modes: Continuous operation (manual control) or PC-controlled (via RS485, Type-C, USB) for automated workflows and data logging .
Motor Type: Brushless DC motor provides low noise, maintenance-free, explosion-proof operation, long life, and high reliability .
Chuck: High-capacity chuck (0.5-10 mm) accepts various stirrer shaft diameters; through-shaft design allows vertical positioning adjustment; easy container replacement .
Stirring Technology: Constant speed technology automatically adjusts torque according to sample viscosity changes to maintain set speed .
Rotation Modes: Forward, reverse, and intermittent mixing for optimized stirring .
Safety Lock: Prevents accidental changes to settings during operation .
Audible Alerts: Buzzer indicates timer completion or fault conditions .
Portability: Compact footprint (90 × 227 × 240 mm) and moderate weight (3.5 kg) for easy benchtop placement .
Maintenance: Brushless DC motor requires no routine maintenance; chuck and shaft should be cleaned after each use.

4. SAFETY & COMPLIANCE ATTRIBUTES

Regulatory Status: General laboratory equipment for in vitro diagnostic use; meets applicable laboratory safety standards .
Safety Features: Overload protection (LCD visual alarm, automatic motor stop), safety lock to prevent accidental setting changes, IP42 splash-resistant housing (protects against liquid splashes and dust), over-temperature protection, automatic motor stop in case of anti-stall or overload condition, no external transformer (integrated power supply) for enhanced safety .
Electrical Safety: Universal voltage (100-240V, 50/60Hz) for international use; 70W power consumption; earthed power connection recommended .
Motor Type: Brushless DC motor provides maintenance-free, quiet, stable operation with long service life and explosion-proof design .
Timer Safety: Programmable timer (1 min-99h59min) with automatic stop; audible alert when timer completes .
GLP Compliance: RS485, Type-C, and USB interfaces allow data logging for GLP documentation; torque and temperature display support reproducible methods .
Calibration: Torque and temperature calibration options for reliable, reproducible measurements .
Operating Conditions: 5-40°C ambient temperature; ≤80% relative humidity; IP42-rated for splash protection .

5. STORAGE & HANDLING ATTRIBUTES

Storage: Store on clean, dry benchtop; protect from dust and moisture; store stirrer shafts separately when not in use.
Cleaning: Wipe drive unit housing with soft, damp cloth using neutral detergent; 70% ethanol solution may be used for surface disinfection; clean chuck and shaft after each use; do not immerse drive unit in liquid; disconnect power before cleaning.
Inspection: Inspect power cord for damage before each use; check chuck for wear or debris; verify shaft is securely tightened before operation; inspect stand stability before mounting.
Operation: Mount drive unit on appropriate stand (sold separately); select appropriate stirrer shaft for sample viscosity and volume; attach shaft to chuck and tighten securely; immerse impeller into sample (ensure proper depth); set speed using rotary knob; set timer if needed (1 min-99h59min); optionally connect PT1000 temperature probe for sample temperature monitoring; start motor via push-button; monitor LCD display for actual speed, torque trend, timer, and temperature .
Speed Selection: Use lower speeds (50-500 rpm) for gentle mixing and high-viscosity materials; use medium speeds (500-1200 rpm) for general mixing and suspensions; use higher speeds (1200-2200 rpm) for high shear and emulsification.
Rotation Mode Selection: Select forward rotation for standard mixing; reverse rotation for dislodging wall-adherent material; intermittent mixing for delicate samples .
Temperature Monitoring: Connect PT1000 probe to measure and display sample temperature in real-time; monitor temperature during heat-sensitive processes .
Data Recording: Connect to PC via RS485, Type-C, or USB for data logging, remote control, and integration with LIMS .
Timer Use: For extended operations, set timer up to 99h59min; unit will automatically stop when timer reaches zero; audible alert signals completion .
Stand Use: Ensure stand is properly assembled on stable benchtop; verify clamp is securely tightened; ensure drive unit is level and stable before operation.
Spill Management: If liquid spills onto drive unit, disconnect power immediately, clean thoroughly with appropriate disinfectant, allow to dry before reuse; IP42 rating provides splash protection but unit should not be submerged.

6. LABORATORY & CLINICAL APPLICATIONS

Primary Application: Medium to high-viscosity (up to 10,000 mPa·s) and large-volume (up to 30L) mixing, homogenizing, suspending, and emulsifying of pharmaceutical formulations, clinical reagents, chemical reactions, and quality control samples in clinical diagnostic, pharmaceutical, and research laboratories .
Clinical Role: Essential mixing equipment in pharmaceutical QC laboratories, clinical chemistry laboratories, biopharmaceutical R&D, analytical chemistry labs, cosmetics manufacturing, food testing, and research facilities requiring precise mixing with temperature monitoring and data logging .

SAFETY HANDLING PRECAUTIONS

1. SAFETY PRECAUTIONS

Electrical Safety: Disconnect power before cleaning or changing shafts; do not immerse drive unit in liquid; keep power cord away from heat sources and sharp edges; use only properly grounded electrical outlets; no external transformer—unit plugs directly into mains .
Stand Stability: Ensure stand is placed on stable, level surface; verify that clamp is securely tightened; ensure drive unit is properly mounted before operation.
Shaft Security: Ensure stirrer shaft is fully inserted and securely tightened in chuck before starting motor; loose shafts may detach during operation and cause injury or sample loss.
Sample Container: Use appropriate container (beaker, vessel) with sufficient diameter and depth for impeller; clamp container to stand to prevent spinning or tipping.
Operating Precautions: Never operate stirrer with impeller out of liquid; this may damage the motor and sample. Ensure impeller is fully immersed (but not touching container bottom) before starting motor. Do not operate above rated viscosity (10,000 mPa·s) or above rated torque (40 N·cm).
Personal Protective Equipment: Wear appropriate PPE—laboratory coat, safety glasses/face shield, gloves—when operating stirrer; use chemical-resistant gloves when handling corrosive or hazardous materials.
Noise Exposure: At ≤70 dB, noise level is below occupational exposure limits; no hearing protection required.
Cleaning: Clean spills immediately; disinfect chuck and shaft if biological materials are involved; allow to dry before storage.
Overload Response: If overload protection activates (LCD visual alarm), disconnect power, reduce sample viscosity or volume, or use larger impeller; allow unit to cool before restarting; contact service if issue persists.
Temperature Probe Handling: Handle PT1000 probe with care; do not bend or damage probe tip; clean probe after each use .
Safety Lock: Use safety lock to prevent accidental changes to settings during critical mixing operations .
Training: Only trained laboratory personnel should operate the OS-T40-Plus Overhead Stirrer for clinical diagnostic applications.

2. FIRST AID MEASURES

Sample Splash: If biological or chemical sample splashes into eyes, flush with water for 15 minutes, seek medical attention; if on skin, wash with soap and water.
Electrical Malfunction: If unit shows signs of electrical malfunction (smoke, burning smell), disconnect power immediately; do not attempt to operate; contact service personnel.
Mechanical Failure: If unit fails to operate, makes abnormal noise, or vibrates excessively, disconnect power, check shaft for balance or damage, contact service if issue persists.
Overload Shutdown: If unit stops due to overload, reduce sample viscosity or volume, or use larger impeller; restart after motor cools; contact service if issue persists.
Chemical Spill: If corrosive chemicals spill on unit, disconnect power immediately, wipe with appropriate neutralizer, dry thoroughly before reconnecting power.

3. FIRE FIGHTING MEASURES

Flammability: Plastic housing and electrical components may burn; brushless DC motor does not produce sparks like carbon brush motors.
Extinguishing Media: Use carbon dioxide (CO₂) or dry chemical extinguisher for electrical fires.
Fire Response: Unplug unit immediately; do not use water on electrical fire.

Plus Overhead stirrer (OS-T40)

Plus Overhead stirrer

PRIMARY CLINICAL & DIAGNOSTIC USES

1. High-Precision Pharmaceutical Formulation Development

2. Clinical Chemistry and Diagnostic Reagent Preparation

Primary Use: Capable of stirring volumes up to 30 liters (water) with maximum torque of 40 N·cm, enabling large-batch preparation of reagents, buffers, and clinical samples for diagnostic testing workflows .

3. Temperature Monitoring for Sensitive Sample Preparation

Primary Use: Features an external PT1000 temperature sensor port for direct measurement and display of sample temperature (accuracy ±0.2°C, display 0.1°C), enabling precise temperature monitoring during mixing of temperature-sensitive pharmaceutical and biological samples .

4. PC Control and Data Logging for GLP/GMP Compliance

Primary Use: Features RS485, Type-C, and USB data interfaces for PC control, enabling remote operation, data logging, and real-time monitoring of speed, torque, and temperature for documentation of stirring parameters to support regulatory compliance .

5. Forward and Reverse Rotation for Enhanced Mixing

Primary Use: Supports forward, reverse, and intermittent mixing modes, allowing directional reversal to improve mixing efficiency and prevent material accumulation on vessel walls .

SECONDARY & SUPPORTIVE USES

1. Chemical Synthesis and Organic Chemistry: Used for stirring chemical reactions in organic synthesis, polymerization, and drug discovery workflows requiring precise speed control and temperature monitoring .

2. API Dissolution Testing: Supports stirring of dissolution media for active pharmaceutical ingredient (API) release testing in pharmaceutical quality control laboratories.

3. Cosmetic and Personal Care Product Formulation: Used for mixing creams, lotions, gels, shampoos, conditioners, and emulsions in cosmetic product development and quality control at batch sizes up to 30L .

4. Food and Beverage Product Testing: Supports sample homogenization and ingredient mixing for food safety testing and nutritional analysis, including butter, tomato sauce, eggs, and sesame paste .

5. Biopharmaceutical Buffer and Media Preparation: Used for large-volume preparation of cell culture media, buffers, and purification solutions in biopharmaceutical R&D.

6. Environmental Sample Processing: Supports mixing of water, soil, and wastewater samples for pollutant analysis and environmental monitoring.

7. Paints, Coatings, and Inks Quality Control: Used for mixing and dispersion of pigments, resins, and additives in paint, coating, and ink manufacturing.

8. Materials Science and Polymer Research: Used for mixing polymer solutions, resins, and plastic additives for materials testing and quality control .

9. Adhesives and Sealants Formulation: Supports mixing of adhesives, epoxies, and sealants for product development and quality testing.

10. Research and Academic Laboratories: Provides reliable overhead stirring for diverse research applications in chemistry, biology, and materials science requiring precise mixing and data logging .

11. Veterinary Pharmaceutical Formulation: Supports mixing of veterinary drug formulations and medicated feeds for animal health testing.

12. Infection Control Disinfectant Production: Used for mixing bulk disinfectant solutions for healthcare facility infection control programs.

13. Cosmetics Manufacturing QC: Used for quality control testing of creams, ointments, shampoos, and conditioners in cosmetics manufacturing .

14. Pilot-Scale Production and Scale-Up: Used for small-batch production and scale-up studies in pharmaceutical, chemical, and food manufacturing pilot plants.

15. Food Processing and Production: Supports homogenization of food products including butter, tomato sauce, eggs, and sesame paste in food manufacturing .

16. Nano-materials Preparation: Used for nanoparticle dispersion and nanomaterial synthesis requiring precise speed control.

17. Solubility Testing for Drug Development: Supports dissolution and mixing in drug solubility studies for new pharmaceutical compounds.

18. Formulation Stability Testing: Used for mixing stability samples in pharmaceutical QC laboratories for shelf-life determination.

19. Building Materials Testing: Supports mixing of soil, mortar, clay, and stone powder for construction materials quality control .

1. BASIC IDENTIFICATION ATTRIBUTES

Designation: Overhead Stirrer, LCD Digital Timed Overhead Stirrer, Laboratory Stirrer, DLAB Plus Overhead stirrer, Digital Electric Overhead Stirrer .

Key Components:

o Motor: Brushless DC motor (maintenance-free, explosion-proof, low noise) . o Motor Power: 60W input / 50W output . o Speed Control: Microprocessor-controlled, 50-2200 rpm, accuracy ±3 rpm . o Display: Large LCD digital display (set speed, actual speed, torque, timer, temperature)

2. TECHNICAL & PERFORMANCE PROPERTIES

Maximum Stirring Capacity: 30 liters (H₂O) .

Maximum Viscosity: 10,000 mPa·s .

Maximum Torque: 40 N·cm .

Speed Range: 50 – 2,200 rpm .

Motor Type: Brushless DC motor (maintenance-free, low noise, explosion-proof) .

Motor Input Power: 60W .

Motor Output Power: 50W .

Total Power Consumption: 70W .

Timer Range: 1 minute to 99 hours 59 minutes (programmable) .

Temperature Display Accuracy: 0.1°C .

External Temperature Sensor: PT1000 (accuracy ±0.2°C, measurement range 0-100°C) .

Chuck Diameter Range: 0.5 – 10 mm .

Voltage/Frequency: 100-240V, 50/60Hz (universal voltage) .

Dimensions (W × D × H): 90 × 227 × 240 mm .

Weight: 3.5 kg .

Protection Class: IP42 (splash-resistant, protection against solid objects >1mm) .

Operating Temperature: 5-40°C .

Permissible Ambient Humidity: ≤80% RH .

Rotation Modes: Forward rotation, reverse rotation, intermittent mixing .

Data Interfaces: RS485, Type-C, USB .

Safety Features: Overload protection, safety lock, IP42 rating .

Audible Alert: Buzzer sounds when timer completes or fault occurs .

Stirrer Shaft Compatibility: Through-shaft design accepts various stirrer shafts (0.5-10mm) .

Calibration: Torque and temperature calibration options .

Accessories (Sold Separately): Universal plate stand (base + rod + clamp), various stirrer impellers (cross-shaped, propeller, anchor, flat blade, PTFE-coated, 316 stainless steel) .

3. PHYSICAL & OPERATIONAL PROPERTIES

Construction: Compact benchtop design with durable housing and through-shaft chuck for easy impeller height adjustment; integrated power supply (no external transformer) for enhanced safety .

Display: Large LCD digital display shows set speed, actual speed, torque trend, timer, and temperature (with optional PT1000 probe) simultaneously; overload protection display .

Control: Microprocessor-controlled with constant speed technology; smooth acceleration; anti-spill mechanism prevents sample splashing; start/stop button; speed adjustment via rotary knob; timer programmable 1 min-99h59min .

Operation Modes: Continuous operation (manual control) or PC-controlled (via RS485, Type-C, USB) for automated workflows and data logging .

Motor Type: Brushless DC motor provides low noise, maintenance-free, explosion-proof operation, long life, and high reliability .

Chuck: High-capacity chuck (0.5-10 mm) accepts various stirrer shaft diameters; through-shaft design allows vertical positioning adjustment; easy container replacement .

Stirring Technology: Constant speed technology automatically adjusts torque according to sample viscosity changes to maintain set speed .

Rotation Modes: Forward, reverse, and intermittent mixing for optimized stirring .

Safety Lock: Prevents accidental changes to settings during operation .

Audible Alerts: Buzzer indicates timer completion or fault conditions .

Portability: Compact footprint (90 × 227 × 240 mm) and moderate weight (3.5 kg) for easy benchtop placement .

Maintenance: Brushless DC motor requires no routine maintenance; chuck and shaft should be cleaned after each use.

4. SAFETY & COMPLIANCE ATTRIBUTES

Regulatory Status: General laboratory equipment for in vitro diagnostic use; meets applicable laboratory safety standards .

Electrical Safety: Universal voltage (100-240V, 50/60Hz) for international use; 70W power consumption; earthed power connection recommended .

Motor Type: Brushless DC motor provides maintenance-free, quiet, stable operation with long service life and explosion-proof design .

Timer Safety: Programmable timer (1 min-99h59min) with automatic stop; audible alert when timer completes .

o Motor: Brushless DC motor (maintenance-free, explosion-proof, low noise) .
o Motor Power: 60W input / 50W output .
o Speed Control: Microprocessor-controlled, 50-2200 rpm, accuracy ±3 rpm .
o Display: Large LCD digital display (set speed, actual speed, torque, timer, temperature)