Pro Overhead stirrer (OS70)

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The Pro Overhead Stirrer is an industrial-grade high-torque digital overhead mechanical stirrer featuring a brushless DC motor (180W input / 160W output), microprocessor-controlled speed regulation (50-1100 rpm, accuracy ±10 rpm), LCD display for real-time monitoring of set speed, actual speed, torque trend, and timer, RS232 interface for PC control and data logging, exceptional torque (300 N·cm), and ultra-high viscosity handling (up to 100,000 mPa·s), designed for the most demanding high-viscosity and large-volume (up to 70 liters) mixing, homogenizing, and suspending applications in clinical diagnostic, pharmaceutical, industrial, 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; through-shaft “top-cross” stirring paddle design for easy impeller height adjustment and easy container replacement; anti-spill smooth start mechanism to prevent sample splashing; overload protection (LCD visual alarm, automatic motor stop, safety cut-off circuit) for equipment and sample safety; torque display for real-time viscosity monitoring; programmable timer (0-99h59min) for unattended overnight operation; silicone protective sleeve protecting drill chuck from erosive vapor and corrosion; and compatibility with a wide range of stirrer shafts (0.5-10 mm chuck diameter) with self-locking hand-tightening tool-free chuck .

The Pro Overhead stirrer represents the highest capacity model in the Pro Overhead stirrer series, with 70L stirring capacity (3.5x OS20-Pro), 300 N·cm torque (7.5x OS20-Pro, 5x OS40-Pro), 100,000 mPa·s viscosity handling (10x OS20-Pro, 2x OS40-Pro), 160W output power (3.2x OS20-Pro, 1.6x OS40-Pro), and timer function (0-99h59min) for overnight operations, making it suitable for the most demanding industrial-scale high-viscosity applications .

For the pharmaceutical formulation scientist and quality control chemist, the Pro Overhead stirrer supports mixing of ultra-high-viscosity creams, ointments, gels, suspensions, and pastes at batch sizes up to 70L, API dissolution testing, and large-volume buffer and media preparation . For the biopharmaceutical manufacturing scientist, it enables processing of cell pastes, protein solutions, fermentation broths, and monoclonal antibody formulations with viscosity up to 100,000 mPa·s . For the clinical laboratory scientist and diagnostic manufacturing manager, it facilitates industrial-scale bulk reagent preparation for high-volume immunoassays, clinical chemistry analyzers, and diagnostic kit manufacturing .

Universal voltage (100-240V, 50/60Hz) enables use in laboratories worldwide without voltage conversion, while the compact (83 × 220 × 186 mm) and lightweight (3.2 kg) design allows easy benchtop placement . The IP21-rated splash-resistant housing ensures safe operation in biosafety cabinets and fume hoods, including handling of biohazardous materials . RS232 connectivity allows integration into automated workflows and LIMS for GMP documentation .

For the patient undergoing pharmaceutical therapy, the Pro Overhead stirrer exceptional torque and viscosity handling ensure consistent formulation quality, batch-to-batch uniformity, and accurate API release testing—supporting the manufacturing of safe, effective ultra-high-viscosity medications such as topical creams, ointments, transdermal patches, and biopharmaceuticals . For patients requiring diagnostic testing, consistent industrial-scale 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 Pro Overhead Stirrer, High Viscosity Mixer, High-Torque Overhead Stirrer, Industrial Overhead Stirrer, Laboratory Stirrer, LCD Digital Overhead Stirrer, Overhead Mechanical Stirrer, Pharmaceutical Mixing, Pro Overhead Stirrer, Quality Control Equipment

Description

Pro Overhead stirrer

PRIMARY CLINICAL & DIAGNOSTIC USES

1. Heavy-Duty Pharmaceutical Formulation Development

Primary Use: Provides a high-torque digital overhead stirrer with LCD display, brushless DC motor (180W input / 160W output), speed range 50-1100 rpm, and maximum viscosity handling of 100,000 mPa·s, designed for the most demanding mixing of high-viscosity pharmaceutical formulations at industrial batch sizes up to 70 liters .
How it helps: For the pharmaceutical formulation scientist and quality control chemist, the Pro Overhead stirrer exceptional torque (300 N·cm) and 70L capacity enable efficient mixing of extremely high-viscosity pharmaceutical formulations such as viscous creams, ointments, gels, suspensions, and pastes at pilot-scale batch sizes . The LCD display provides real-time monitoring of set speed, actual speed, and torque trend for viscosity changes . For the patient, consistent high-volume formulation ensures that medications deliver the correct dosage and therapeutic effect with each use, particularly for high-viscosity topical and transdermal preparations.

2. Large-Scale Biopharmaceutical Manufacturing Support

Primary Use: Capable of stirring volumes up to 70 liters (water) with maximum torque of 300 N·cm, enabling large-batch preparation of biopharmaceutical intermediates, cell culture media, buffers, and purification solutions for biopharmaceutical manufacturing support .
How it helps: For the biopharmaceutical manufacturing scientist and quality control chemist, the Pro Overhead stirrer industrial-scale capacity and automatic torque adjustment ensure efficient processing of high-viscosity cell pastes, protein solutions, fermentation broths, and monoclonal antibody formulations—critical for downstream purification and final formulation . For the patient, consistent high-viscosity sample processing ensures that biopharmaceutical products (monoclonal antibodies, vaccines, cell therapies, gene therapies) meet quality standards for safety and efficacy.

3. Industrial-Scale Clinical Reagent and Buffer Preparation

Primary Use: Capable of stirring volumes up to 70 liters (water) with constant speed maintenance despite viscosity changes, enabling industrial-scale preparation of reagents, buffers, and clinical samples for high-throughput diagnostic testing workflows in reference laboratories and diagnostic manufacturing .
How it helps: For the clinical laboratory scientist and laboratory manager in high-volume reference laboratories and diagnostic manufacturing facilities, the OS70-Pro’s maximum capacity (70L) allows efficient preparation of bulk reagents for immunoassays, clinical chemistry analyzers, molecular diagnostics, and diagnostic kit manufacturing—significantly reducing hands-on time and ensuring batch consistency across tens of thousands of patient samples . For the patient, consistent reagent preparation across industrial-scale batches reduces inter-run variability and improves the reliability of diagnostic test results .

4. High-Viscosity Polymer and Material Testing

Primary Use: Capable of handling samples with viscosity up to 100,000 mPa·s, enabling processing of extremely viscous polymers, resins, adhesives, and sealants for quality control and materials testing in pharmaceutical and medical device manufacturing .
How it helps: For the materials scientist and quality control engineer in medical device manufacturing, the Pro Overhead stirrer high-torque motor and constant speed technology ensure consistent mixing of high-viscosity polymers used in medical device coatings, drug-eluting stents, implantable devices, and wound care products . For the patient, consistent high-viscosity processing ensures that medical devices and pharmaceutical coatings meet quality standards for safety and efficacy .

5. PC Control and Data Logging for GMP Compliance

Primary Use: Features RS232 interface for PC control, enabling remote operation, data logging, and real-time monitoring of speed and torque for titration, reaction monitoring, and documentation of stirring parameters to support GMP compliance .
How it helps: For the quality assurance manager and regulatory compliance officer in pharmaceutical manufacturing, the Pro Overhead stirrer RS232 connectivity allows connection to laboratory information management systems (LIMS) for traceable documentation of stirring speed, torque, and duration for each batch or sample—supporting regulatory compliance with GMP, GLP, 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 .

SECONDARY & SUPPORTIVE USES

1. Chemical Synthesis and Polymerization: Used for stirring chemical reactions in organic synthesis, polymerization, and drug discovery workflows requiring high torque and large volumes up to 70L .

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 at batch sizes up to 70L .

4. Food and Beverage Product Testing: Supports sample homogenization and ingredient mixing for food safety testing and nutritional analysis of high-viscosity products .

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 up to 70L batches .

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 up to 70L .

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 of high-viscosity materials .

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

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 .

17. Healthcare Product Development: Supports stirring in R&D of new pharmaceutical treatments, vaccines, and healthcare products at pilot scale .

18. Industrial Chemical Processing: Used for mixing of industrial chemicals, solvents, and intermediates in chemical manufacturing quality control .

19. Ceramic Slurry Preparation: Supports mixing of ceramic slurries and suspensions for medical device and industrial applications .

20. Textile Chemical Quality Control: Used for homogenization of textile auxiliaries and finishing agents for quality testing .

KEY PRODUCT FEATURES

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: An industrial-grade high-torque digital overhead stirrer with LCD display, brushless DC motor, microprocessor control, RS232 interface, and exceptional torque (300 N·cm) and viscosity (100,000 mPa·s) handling, designed for the most demanding high-viscosity and large-volume (up to 70L) mixing, homogenizing, and suspending applications in clinical diagnostic, pharmaceutical, industrial, and research laboratories .
Designation: Pro Overhead Stirrer, LCD Digital Overhead Stirrer, High-Torque Overhead Stirrer, Industrial Overhead Stirrer, Laboratory Stirrer, DLAB OS70-Pro, Heavy-Duty Digital Electric Overhead Stirrer .
Key Components:
- Motor: Brushless DC motor (maintenance-free, explosion-proof, low noise) .
- Motor Power: 180W input / 160W output .
- Speed Control: Microprocessor-controlled, 50-1100 rpm, accuracy ±10 rpm .
- Display: LCD digital display (set speed, actual speed, torque trend, overload protection) .
- Torque Display: LCD real-time torque trend display for viscosity monitoring .
- Timer: Programmable timer 0-99 hours 59 minutes .
- Chuck: 0.5-10 mm chuck diameter for various stirrer shafts .
- Through-Shaft Design: Stirring paddle "top-cross" design allows easy adjustment of impeller position and easy container replacement .
- Interface: RS232 for PC control and data logging .
- Safety Features: Overload protection (LCD display, automatic motor stop), anti-spill smooth start mechanism, IP21 protection rating, over-temperature protection, safety circuit with automatic power-off in abnormal conditions .
- Protective Cover: Silicone cover protecting drill chuck from erosive vapor and corrosion .

2. TECHNICAL & PERFORMANCE PROPERTIES

Maximum Stirring Capacity: 70 liters (H₂O) .
Maximum Viscosity: 100,000 mPa·s .
Maximum Torque: 300 N·cm .
Speed Range: 50 – 1,100 rpm .
Speed Display Resolution: ±10 rpm .
Speed Control Accuracy: ±10 rpm .
Motor Type: Brushless DC motor (maintenance-free, low noise, explosion-proof) .
Motor Input Power: 180W .
Motor Output Power: 160W .
Total Power Consumption: 200W .
Timer Range: 0-99 hours 59 minutes (programmable) .
Chuck Diameter Range: 0.5 – 10 mm .
Voltage/Frequency: 100-240V, 50/60Hz (universal voltage) .
Dimensions (W × D × H): 83 × 220 × 186 mm .
Weight: 3.2 kg (instrument only) .
Protection Class: IP21 (splash-resistant, protection against solid objects >12mm) .
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 (0.5-10mm) .
Overload Protection: LCD display visual alarm, motor automatic stop, safety cut-off circuit .
Torque Display: LCD real-time torque trend display .
Stirring Paddle: "Top-cross" design, easy to replace container .
Accessories (Sold Separately): Universal plate stand (base + rod + clamp), various stirrer impellers (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; silicone protective sleeve prevents solvent volatilization and corrosion of drill chuck .
Display: Large LCD digital display shows set speed, actual speed, torque trend, timer, and overload protection status; torque display for real-time viscosity monitoring .
Control: Microprocessor-controlled with smooth acceleration; anti-spill smooth start mechanism prevents sample splashing; start/stop button; speed adjustment via rotary knob; timer programmable 0-99h59min .
Operation Modes: Continuous operation (manual control) or PC-controlled (via RS232) 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 self-locking hand-tightening drill chuck (0.5-10 mm) accepts various stirrer shaft diameters; through-shaft design allows vertical positioning adjustment; tool-free operation .
Stirring Paddle: "Top-cross" patented design ensures uniform mixing and easy container replacement; available in 316 stainless steel (corrosion-resistant) and PTFE-coated options .
Constant Speed Technology: Automatically adjusts torque according to sample viscosity changes to maintain set speed .
Portability: Compact footprint (83 × 220 × 186 mm) and moderate weight (3.2 kg) for easy benchtop placement .
Maintenance: Brushless DC motor requires no routine maintenance; chuck and shaft should be cleaned after each use; silicone protective sleeve protects chuck from corrosive vapors .

4. SAFETY & COMPLIANCE ATTRIBUTES

Regulatory Status: General laboratory equipment for in vitro diagnostic use; meets applicable laboratory safety standards; complies with IEC 60335, RoHS, CE .
Safety Features: Overload protection (LCD visual alarm, automatic motor stop, cut-off circuit), anti-spill smooth start mechanism (microprocessor-controlled smooth acceleration), IP21 splash-resistant housing, automatic motor stop in case of anti-stall or overload condition, safety circuit with automatic power-off in abnormal conditions, silicone protective sleeve prevents solvent volatilization corrosion, over-speed detection and protection .
Electrical Safety: Universal voltage (100-240V, 50/60Hz) for international use; 200W 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 (0-99h59min) with automatic stop; ideal for unattended overnight operation .
GLP Compliance: RS232 interface allows data logging for GLP documentation; LCD torque display supports viscosity monitoring for reproducible methods .
Operating Conditions: 5-40°C ambient temperature; ≤80% relative humidity; IP21-rated for splash protection .
Certifications: Complies with IEC 60335, RoHS, CE .

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; inspect silicone protective sleeve for damage .
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 (self-locking hand-tightening chuck, tool-free); immerse impeller into sample (ensure proper depth); set speed using rotary knob; set timer if needed (0-99h59min); start motor via push-button; monitor LCD display for actual speed, torque trend, and overload indicator .
Speed Selection: Use lower speeds (50-300 rpm) for extremely high-viscosity materials (50,000-100,000 mPa·s); use medium speeds (300-700 rpm) for high-viscosity materials (10,000-50,000 mPa·s); use higher speeds (700-1100 rpm) for moderate-viscosity materials (1,000-10,000 mPa·s) .
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; 316 stainless steel and PTFE options available .
Timer Use: For overnight operations, set timer up to 99h59min; unit will automatically stop when timer reaches zero; auto-restart function available in case of power loss for overnight operations .
Stand Use: Ensure stand is properly assembled on stable benchtop; verify clamp is securely tightened; ensure drive unit is level and stable before operation; ensure stand can support 70L container weight .
RS232 Connection: Connect to PC via RS232 interface for data logging, remote control, and documentation of stirring parameters; compatible with laboratory information management systems (LIMS) for GMP/GLP compliance .
Spill Management: If liquid spills onto drive unit, disconnect power immediately, clean thoroughly with appropriate disinfectant, allow to dry before reuse; IP21 rating provides splash protection but unit should not be submerged .

6. LABORATORY & CLINICAL APPLICATIONS

Primary Application: Industrial-scale, high-torque, high-viscosity (up to 100,000 mPa·s) and large-volume (up to 70L) mixing, homogenizing, suspending, and emulsifying of pharmaceutical formulations, biopharmaceutical intermediates, clinical reagents, chemical reactions, and quality control samples in high-demand clinical diagnostic, pharmaceutical, industrial, and research laboratories .
Clinical Role: Essential high-performance industrial mixing equipment in pharmaceutical QC laboratories, biopharmaceutical manufacturing facilities, clinical chemistry laboratories, diagnostic manufacturing facilities, analytical chemistry labs, and industrial research facilities requiring ultra-high-torque or ultra-high-viscosity 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; ensure stand is rated for 70L load capacity .
Shaft Security: Ensure stirrer shaft is fully inserted and securely tightened in self-locking hand-tightening chuck before starting motor; loose shafts may detach during operation and cause injury or sample loss; tool-free chuck provides quick, secure attachment .
Sample Container: Use appropriate container (beaker, vessel, reactor) with sufficient diameter and depth for impeller; clamp container to stand to prevent spinning or tipping; ensure container can withstand high torque of high-viscosity mixing (up to 300 N·cm) .
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 (100,000 mPa·s) or above rated torque (300 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, motor automatically stops, circuit cuts off), disconnect power, reduce sample viscosity or volume, or use larger impeller; allow unit to cool before restarting; contact service if issue persists .
Torque Monitoring: Monitor LCD torque display during operation; increasing torque indicates increasing viscosity; decreasing torque may indicate sample thinning or impeller cavitation; constant torque indicates stable mixing .
Corrosive Vapors: Silicone protective sleeve protects chuck from corrosive vapors; ensure sleeve is intact; replace if damaged .
Training: Only trained laboratory personnel should operate the OS70-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 .
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; silicone protective sleeve may burn .
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 (OS70)

Pro Overhead stirrer

PRIMARY CLINICAL & DIAGNOSTIC USES

1. Heavy-Duty Pharmaceutical Formulation Development

2. Large-Scale Biopharmaceutical Manufacturing Support

Primary Use: Capable of stirring volumes up to 70 liters (water) with maximum torque of 300 N·cm, enabling large-batch preparation of biopharmaceutical intermediates, cell culture media, buffers, and purification solutions for biopharmaceutical manufacturing support .

3. Industrial-Scale Clinical Reagent and Buffer Preparation

4. High-Viscosity Polymer and Material Testing

Primary Use: Capable of handling samples with viscosity up to 100,000 mPa·s, enabling processing of extremely viscous polymers, resins, adhesives, and sealants for quality control and materials testing in pharmaceutical and medical device manufacturing .

5. PC Control and Data Logging for GMP Compliance

Primary Use: Features RS232 interface for PC control, enabling remote operation, data logging, and real-time monitoring of speed and torque for titration, reaction monitoring, and documentation of stirring parameters to support GMP compliance .

SECONDARY & SUPPORTIVE USES

1. Chemical Synthesis and Polymerization: Used for stirring chemical reactions in organic synthesis, polymerization, and drug discovery workflows requiring high torque and large volumes up to 70L .

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 at batch sizes up to 70L .

4. Food and Beverage Product Testing: Supports sample homogenization and ingredient mixing for food safety testing and nutritional analysis of high-viscosity products .

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 up to 70L batches .

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 up to 70L .

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 of high-viscosity materials .

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

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 .

17. Healthcare Product Development: Supports stirring in R&D of new pharmaceutical treatments, vaccines, and healthcare products at pilot scale .

18. Industrial Chemical Processing: Used for mixing of industrial chemicals, solvents, and intermediates in chemical manufacturing quality control .

19. Ceramic Slurry Preparation: Supports mixing of ceramic slurries and suspensions for medical device and industrial applications .

20. Textile Chemical Quality Control: Used for homogenization of textile auxiliaries and finishing agents for quality testing .

1. BASIC IDENTIFICATION ATTRIBUTES

Designation: Pro Overhead Stirrer, LCD Digital Overhead Stirrer, High-Torque Overhead Stirrer, Industrial Overhead Stirrer, Laboratory Stirrer, DLAB OS70-Pro, Heavy-Duty Digital Electric Overhead Stirrer .

Key Components:

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

Motor Power: 180W input / 160W output .

Speed Control: Microprocessor-controlled, 50-1100 rpm, accuracy ±10 rpm .

Display: LCD digital display (set speed, actual speed, torque trend, overload protection) .

Torque Display: LCD real-time torque trend display for viscosity monitoring .

Timer: Programmable timer 0-99 hours 59 minutes .

Chuck: 0.5-10 mm chuck diameter for various stirrer shafts .

Through-Shaft Design: Stirring paddle "top-cross" design allows easy adjustment of impeller position and easy container replacement .

Interface: RS232 for PC control and data logging .

Safety Features: Overload protection (LCD display, automatic motor stop), anti-spill smooth start mechanism, IP21 protection rating, over-temperature protection, safety circuit with automatic power-off in abnormal conditions .

Protective Cover: Silicone cover protecting drill chuck from erosive vapor and corrosion .

2. TECHNICAL & PERFORMANCE PROPERTIES

Maximum Stirring Capacity: 70 liters (H₂O) .

Maximum Viscosity: 100,000 mPa·s .

Maximum Torque: 300 N·cm .

Speed Range: 50 – 1,100 rpm .

Speed Display Resolution: ±10 rpm .

Speed Control Accuracy: ±10 rpm .

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

Motor Input Power: 180W .

Motor Output Power: 160W .

Total Power Consumption: 200W .

Timer Range: 0-99 hours 59 minutes (programmable) .

Chuck Diameter Range: 0.5 – 10 mm .

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

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

Weight: 3.2 kg (instrument only) .

Protection Class: IP21 (splash-resistant, protection against solid objects >12mm) .

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 (0.5-10mm) .

Overload Protection: LCD display visual alarm, motor automatic stop, safety cut-off circuit .

Torque Display: LCD real-time torque trend display .

Stirring Paddle: "Top-cross" design, easy to replace container .

Accessories (Sold Separately): Universal plate stand (base + rod + clamp), various stirrer impellers (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; silicone protective sleeve prevents solvent volatilization and corrosion of drill chuck .

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

Control: Microprocessor-controlled with smooth acceleration; anti-spill smooth start mechanism prevents sample splashing; start/stop button; speed adjustment via rotary knob; timer programmable 0-99h59min .

Operation Modes: Continuous operation (manual control) or PC-controlled (via RS232) 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 self-locking hand-tightening drill chuck (0.5-10 mm) accepts various stirrer shaft diameters; through-shaft design allows vertical positioning adjustment; tool-free operation .

Stirring Paddle: "Top-cross" patented design ensures uniform mixing and easy container replacement; available in 316 stainless steel (corrosion-resistant) and PTFE-coated options .

Constant Speed Technology: Automatically adjusts torque according to sample viscosity changes to maintain set speed .