Pro Overhead stirrer (OS20)

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The Pro Overhead Stirrer is a digital overhead mechanical stirrer featuring a brushless DC motor (60W input / 50W output), microprocessor-controlled speed regulation (50-2200 rpm), LCD display for real-time monitoring of speed and torque, RS232 interface for PC control and data logging, and IP42 splash-resistant protection, designed for high-viscosity (up to 10,000 mPa·s) and large-volume (up to 20 liters) mixing, homogenizing, and suspending applications in clinical diagnostic, pharmaceutical, and research laboratories.

Key features include a maintenance-free brushless DC motor for quiet, long-lasting operation, through-shaft design for easy impeller height adjustment, automatic torque adjustment based on sample viscosity, over-torque protection (automatic motor stop to prevent damage), anti-spill slow-start mechanism, and compatibility with a wide range of stirrer shafts (0.5-10 mm chuck diameter).

For the pharmaceutical formulation scientist and quality control chemist, the Pro Overhead Stirrer supports mixing of creams, ointments, gels, and suspensions, API dissolution testing, and large-volume buffer and media preparation. For the analytical chemist, it enables pH titration and reaction monitoring with PC control and data logging (RS232). For the clinical laboratory scientist, it facilitates bulk reagent preparation for immunoassays and clinical chemistry analyzers.

Universal voltage (100-240V, 50/60Hz) enables use in laboratories worldwide without voltage conversion, while the compact (83 × 220 × 186 mm) and lightweight (2.8 kg) design allows easy benchtop placement. The IP42-rated splash-resistant housing ensures safe operation in biosafety cabinets and fume hoods.

For the patient undergoing pharmaceutical therapy, the Pro Overhead Stirrer precise speed control 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 reagent preparation across large batches reduces inter-run variability and improves the reliability of diagnostic test results across clinical chemistry, pharmaceutical QC, and analytical testing applications.

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Categories: LABORATORY EQUIPMENT AND SUPPLIES, Lab Consumables Tags: Clinical Laboratory Equipment, Digital Overhead Stirrer, DLAB Pro Overhead Stirrer, High Viscosity Mixer, Laboratory Stirrer, Overhead Mechanical Stirrer, Pharmaceutical Mixing, Pro Overhead Stirrer Overhead Stirrer, Quality Control Equipment

Description

Pro Overhead stirrer

PRIMARY CLINICAL & DIAGNOSTIC USES

1. High-Viscosity Sample Preparation for Pharmaceutical Formulations

Primary Use: Provides a digital overhead stirrer with LCD display, brushless DC motor (60W input / 50W output), speed range 50-2200 rpm, and maximum viscosity handling of 10,000 mPa·s, designed for mixing, homogenizing, and suspending high-viscosity pharmaceutical formulations and active ingredients.
How it helps: For the pharmaceutical formulation scientist and quality control chemist, the Pro Overhead Stirrer microprocessor-controlled speed regulation and automatic torque adjustment ensure consistent mixing of creams, ointments, gels, and suspensions—critical for batch-to-batch uniformity and drug product quality. For the patient, consistent pharmaceutical formulation ensures that medications deliver the correct dosage and therapeutic effect with each use.

2. Large-Volume Clinical Sample Homogenization

Primary Use: Capable of stirring volumes up to 20 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 Pro Overhead Stirrer large capacity and anti-spill slow-start feature allow efficient preparation of bulk reagents for immunoassays, clinical chemistry analyzers, and molecular diagnostics—reducing hands-on time and ensuring batch consistency. For the patient, consistent reagent preparation across large batches reduces inter-run variability and improves the reliability of diagnostic test results.

3. pH Titration and Reaction Monitoring

Primary Use: Compatible with RS232 interface for PC control, enabling remote operation, data logging, and real-time monitoring of speed and torque for titration and reaction monitoring applications.
How it helps: For the analytical chemist and quality control scientist, the Pro Overhead Stirrer RS232 connectivity allows integration into automated titration systems and reaction monitoring workflows—enabling precise control of stirring speed during pH titrations, kinetic studies, and stability testing. For the patient, precise reaction monitoring ensures accurate release testing of pharmaceutical products and reliable analytical results for clinical decision-making.

4. Documentation and Compliance Support

Primary Use: The RS232 interface allows connection to laboratory information management systems (LIMS) for documentation of stirring parameters, supporting GLP/GMP compliance and audit readiness.
How it helps: For the quality assurance manager and regulatory compliance officer, the Pro Overhead Stirrer data export capability provides traceable documentation of stirring speed, torque, and duration 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. Safe Handling of Biohazardous Materials

Primary Use: Features IP42 protection rating, splash-resistant design, and over-torque protection with automatic motor stop, enabling safe handling of biohazardous materials in biosafety cabinets and fume hoods.
How it helps: For the clinical laboratory scientist and biosafety officer, the Pro Overhead Stirrer IP42-rated, splash-resistant housing protects against accidental spills of infectious materials, while over-torque protection prevents motor damage and sample loss. For the patient, safe handling of biohazardous materials in clinical and research laboratories reduces the risk of laboratory-acquired infections and ensures sample integrity.

SECONDARY & SUPPORTIVE USES

1. Chemical Synthesis and Reaction Mixing: Used for stirring chemical reactions in organic synthesis, polymerization, and drug discovery workflows.

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, and emulsions in cosmetic product development and quality control.

4. Food and Beverage Product Testing: Supports sample homogenization and ingredient mixing for food safety testing and nutritional analysis.

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

6. Petroleum and Petrochemical Sample Preparation: Supports mixing of oil, fuel, and lubricant samples for viscosity testing and quality analysis.

7. Biopharmaceutical Buffer and Media Preparation: Used for large-volume preparation of cell culture media, buffers, and purification solutions in biopharmaceutical manufacturing.

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

9. Polymer and Plastics Testing: Used for mixing polymer solutions, resins, and plastic additives for materials testing and quality control.

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

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

12. Debubbling and Degassing of Viscous Liquids: Supports gentle stirring to remove air bubbles from viscous solutions and gels.

13. Quality Control Testing of Raw Materials: Used for mixing of incoming raw material samples for identity, purity, and quality testing.

14. Research and Academic Laboratories: Provides reliable overhead stirring for diverse research applications in chemistry, biology, and materials science.

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

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

KEY PRODUCT FEATURES

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A digital overhead stirrer with LCD display, brushless DC motor, microprocessor control, and RS232 interface, designed for high-viscosity and large-volume mixing, homogenizing, and suspending applications in clinical diagnostic, pharmaceutical, and research laboratories.
Designation:Pro Overhead Stirrer Overhead Stirrer, Digital Overhead Stirrer, Overhead Mechanical Stirrer, Laboratory Stirrer, DLAB Pro Overhead Stirrer, LCD Digital Overhead Stirrer.
Key Components:

o Motor: Brushless DC motor (maintenance-free).
o Motor Power: 60W input / 50W output.
o Speed Control: Microprocessor-controlled, 50-2200 rpm.
o Display: LCD digital display (speed, torque, set value, actual value).
o Chuck: 0.5-10 mm chuck diameter for various stirrer shafts.
o Through-Shaft Design: Allows easy adjustment of impeller position.
o Interface: RS232 for PC control and data logging.
o Safety Features: Over-torque protection (auto stop), anti-spill slow-start, over-temperature protection, IP42 protection rating.

2. TECHNICAL & PERFORMANCE PROPERTIES

Maximum Stirring Capacity: 20 liters (H₂O).
Maximum Viscosity: 10,000 mPa·s.
Maximum Torque: 40 N·cm.
Speed Range: 50 – 2,200 rpm.
Speed Display Resolution: ±1 rpm.
Speed Control Accuracy: ±3 rpm.
Motor Type: Brushless DC motor (maintenance-free, low noise).
Motor Input Power: 60W.
Motor Output Power: 50W.
Total Power Consumption: 70W.
Chuck Diameter Range: 0.5 – 10 mm.
Voltage/Frequency: 100-240V, 50/60Hz (universal voltage).
Dimensions (W × D × H): 83 × 220 × 186 mm.
Weight: 2.8 kg (instrument only).
Protection Class: IP42 (splash-resistant, protection against solid objects >1mm).
Operating Temperature: 5-40°C.
Permissible Ambient Humidity: ≤80% RH.
Interface: RS232 (PC control, data logging).
Stirrer Shaft Compatibility: Through-shaft design accepts various stirrer shafts.
Timer Function: Optional via PC control.
Accessories (Sold Separately): Universal plate stand (base + rod + clamp), various stirrer impellers (propeller, anchor, flat blade, PTFE-coated).

3. PHYSICAL & OPERATIONAL PROPERTIES

Construction: Compact benchtop design with durable housing and through-shaft chuck for easy impeller height adjustment.
Display: Large LCD digital display shows set speed, actual speed, torque, and operating status; torque display for real-time viscosity monitoring.
Control: Microprocessor-controlled with smooth acceleration; anti-spill slow-start prevents sample splashing; automatic torque adjustment based on sample viscosity.
Operation Modes: Continuous operation (manual control) or PC-controlled (via RS232) for automated workflows.
Motor Type: Brushless DC motor provides low noise, long life, and maintenance-free operation.
Chuck: High-capacity chuck (0.5-10 mm) accepts various stirrer shaft diameters; through-shaft design allows vertical positioning adjustment.
Portability: Compact footprint (83 × 220 × 186 mm) and moderate weight (2.8 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: Over-torque protection (automatic motor stop if overload detected), over-temperature protection (automatic power-off if overheating), anti-spill slow-start mechanism, IP42 splash-resistant housing, automatic power-off in case of abnormal conditions.
Electrical Safety: Universal voltage (100-240V, 50/60Hz); 70W power consumption; earthed power connection recommended.
Motor Type: Brushless DC motor provides maintenance-free, quiet, stable operation with long service life.
GLP Compliance: RS232 interface allows data logging for GLP documentation; torque display supports viscosity monitoring.
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 digital controls; start motor; monitor torque display for viscosity changes.
Speed Selection: Use lower speeds (50-500 rpm) for gentle mixing, delicate samples, and viscous materials; use medium speeds (500-1200 rpm) for general mixing and suspensions; use higher speeds (1200-2200 rpm) for high shear and emulsification.
Shaft Selection: Use propeller-style impellers for general mixing and fluid circulation; use anchor-style impellers for high-viscosity samples; use flat-blade impellers for shear-sensitive applications; use PTFE-coated impellers for corrosive samples.
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: High-viscosity and large-volume mixing, homogenizing, suspending, and emulsifying of pharmaceutical formulations, clinical samples, 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 manufacturing, analytical chemistry labs, and research facilities requiring high-viscosity or large-volume sample preparation

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.
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.
Training: Only trained laboratory personnel should operate the OS20-Pro 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.
Over-torque 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.

Pro Overhead stirrer (OS20)

Pro Overhead stirrer

PRIMARY CLINICAL & DIAGNOSTIC USES

1. High-Viscosity Sample Preparation for Pharmaceutical Formulations

2. Large-Volume Clinical Sample Homogenization

Primary Use: Capable of stirring volumes up to 20 liters (water) with maximum torque of 40 N·cm, enabling large-batch preparation of reagents, buffers, and clinical samples for diagnostic testing workflows.

3. pH Titration and Reaction Monitoring

Primary Use: Compatible with RS232 interface for PC control, enabling remote operation, data logging, and real-time monitoring of speed and torque for titration and reaction monitoring applications.

4. Documentation and Compliance Support

Primary Use: The RS232 interface allows connection to laboratory information management systems (LIMS) for documentation of stirring parameters, supporting GLP/GMP compliance and audit readiness.

5. Safe Handling of Biohazardous Materials

Primary Use: Features IP42 protection rating, splash-resistant design, and over-torque protection with automatic motor stop, enabling safe handling of biohazardous materials in biosafety cabinets and fume hoods.

SECONDARY & SUPPORTIVE USES

1. Chemical Synthesis and Reaction Mixing: Used for stirring chemical reactions in organic synthesis, polymerization, and drug discovery workflows.

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, and emulsions in cosmetic product development and quality control.

4. Food and Beverage Product Testing: Supports sample homogenization and ingredient mixing for food safety testing and nutritional analysis.

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

6. Petroleum and Petrochemical Sample Preparation: Supports mixing of oil, fuel, and lubricant samples for viscosity testing and quality analysis.

7. Biopharmaceutical Buffer and Media Preparation: Used for large-volume preparation of cell culture media, buffers, and purification solutions in biopharmaceutical manufacturing.

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

9. Polymer and Plastics Testing: Used for mixing polymer solutions, resins, and plastic additives for materials testing and quality control.

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

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

12. Debubbling and Degassing of Viscous Liquids: Supports gentle stirring to remove air bubbles from viscous solutions and gels.

13. Quality Control Testing of Raw Materials: Used for mixing of incoming raw material samples for identity, purity, and quality testing.

14. Research and Academic Laboratories: Provides reliable overhead stirring for diverse research applications in chemistry, biology, and materials science.

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

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

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A digital overhead stirrer with LCD display, brushless DC motor, microprocessor control, and RS232 interface, designed for high-viscosity and large-volume mixing, homogenizing, and suspending applications in clinical diagnostic, pharmaceutical, and research laboratories.

Designation:Pro Overhead Stirrer Overhead Stirrer, Digital Overhead Stirrer, Overhead Mechanical Stirrer, Laboratory Stirrer, DLAB Pro Overhead Stirrer, LCD Digital Overhead Stirrer.

Key Components:

2. TECHNICAL & PERFORMANCE PROPERTIES

Maximum Stirring Capacity: 20 liters (H₂O).

Maximum Viscosity: 10,000 mPa·s.

Maximum Torque: 40 N·cm.

Speed Range: 50 – 2,200 rpm.

Speed Display Resolution: ±1 rpm.

Speed Control Accuracy: ±3 rpm.

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

Motor Input Power: 60W.

Motor Output Power: 50W.

Total Power Consumption: 70W.

Chuck Diameter Range: 0.5 – 10 mm.

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

Dimensions (W × D × H): 83 × 220 × 186 mm.

Weight: 2.8 kg (instrument only).

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

Operating Temperature: 5-40°C.

Permissible Ambient Humidity: ≤80% RH.

Interface: RS232 (PC control, data logging).

Stirrer Shaft Compatibility: Through-shaft design accepts various stirrer shafts.

Timer Function: Optional via PC control.

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

3. PHYSICAL & OPERATIONAL PROPERTIES

Construction: Compact benchtop design with durable housing and through-shaft chuck for easy impeller height adjustment.

Display: Large LCD digital display shows set speed, actual speed, torque, and operating status; torque display for real-time viscosity monitoring.

Control: Microprocessor-controlled with smooth acceleration; anti-spill slow-start prevents sample splashing; automatic torque adjustment based on sample viscosity.

Operation Modes: Continuous operation (manual control) or PC-controlled (via RS232) for automated workflows.

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

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

Portability: Compact footprint (83 × 220 × 186 mm) and moderate weight (2.8 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: Over-torque protection (automatic motor stop if overload detected), over-temperature protection (automatic power-off if overheating), anti-spill slow-start mechanism, IP42 splash-resistant housing, automatic power-off in case of abnormal conditions.

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

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

GLP Compliance: RS232 interface allows data logging for GLP documentation; torque display supports viscosity monitoring.

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.

Speed Selection: Use lower speeds (50-500 rpm) for gentle mixing, delicate samples, and viscous materials; use medium speeds (500-1200 rpm) for general mixing and suspensions; use higher speeds (1200-2200 rpm) for high shear and emulsification.

Shaft Selection: Use propeller-style impellers for general mixing and fluid circulation; use anchor-style impellers for high-viscosity samples; use flat-blade impellers for shear-sensitive applications; use PTFE-coated impellers for corrosive samples.

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