Magnetic Stirrer(MS-PB)

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The Magnetic Stirrer is an economical, non‑heating benchtop instrument designed for general‑purpose mixing in clinical diagnostics, pharmaceutical quality control, food and feed testing, and teaching laboratories. Featuring a 5‑inch (φ135 mm) Nylon+GF (glass fiber reinforced) work plate that resists many common laboratory chemicals, this stirrer delivers a maximum stirring capacity of 3 liters of water and a stepless speed range of 0 to 1500 rpm controlled by a simple analog dial.
Every MS-PB is equipped with a maintenance‑free, spark‑free brushless DC motor that provides quiet, reliable operation without routine upkeep. The compact size (approximately 150 × 190 × 95 mm) and light weight (1.2 kg) make it easy to fit on crowded benchtops and move between workstations. The simple one‑knob operation and LED power indicator make it suitable for both experienced laboratory professionals and students.
Key user‑focused features include a chemical‑resistant work plate for durability against common spills, a brushless motor for long life and safe operation in environments where flammable solvents may be present, and a compact, lightweight design that saves valuable bench space. The universal power supply (100‑240 V, 50/60 Hz) allows worldwide use without voltage conversion (depending on the regional model).
For the clinical laboratory scientist, pharmaceutical QC technician, and teaching laboratory instructor, the MS-PB delivers the reliable, low‑cost stirring required for routine buffer preparation, reagent mixing, standard solution preparation, and sample homogenization. For the patient, the consistent performance of this economical stirrer helps ensure that diagnostic reagents and quality control materials are prepared accurately, supporting reliable test results and patient safety.
Description

 Magnetic Stirrer(MS-PB)

PRIMARY CLINICAL & DIAGNOSTIC USES

1. General Solution Mixing for Routine Clinical Laboratory Work
Primary Use: Provides an economical, non‑heating magnetic stirrer with a 5‑inch (φ135 mm) Nylon+GF (glass fiber reinforced) work plate and a maintenance‑free brushless DC motor, used for the efficient and reproducible mixing of aqueous solutions, buffers, reagents, and clinical laboratory preparations, with a maximum stirring capacity of 3 liters (water) and a stepless speed range of 0 to 1500 rpm controlled by an analog dial.
How it helps: For the clinical laboratory scientist and medical technologist, the MS-PB’s simple analog operation and durable glass fiber reinforced Nylon top provide a cost‑effective solution for everyday mixing tasks. The brushless DC motor delivers consistent, low‑noise performance without the need for routine maintenance. The chemical‑resistant work plate withstands spills of common laboratory reagents such as alcohols, dilute acids, and buffers. The compact design (150 × 190 × 95 mm) and light weight (1.2 kg) save valuable bench space. For the patient, consistent mixing of reagents and quality control materials supports reliable diagnostic test results.
2. Sample Preparation for Clinical Chemistry and Immunoassays
Primary Use: Used for the gentle mixing of patient serum, plasma, or urine samples with diagnostic reagents, as well as the preparation of buffer solutions, wash buffers, and diluents for routine clinical chemistry panels and immunoassay workflows.
How it helps: For the clinical chemistry technologist, the wide speed range (0–1500 rpm) allows precise adjustment from a slow, gentle stir for sensitive biological samples to a more vigorous mixing for dissolving powdered reagents. The Nylon+GF work plate is resistant to corrosion from salts and mild acids commonly encountered in clinical labs. The simple on/off and speed control dial requires minimal training, reducing the risk of operator error. For the patient, accurate and reproducible sample preparation directly impacts the quality of diagnostic results for conditions such as diabetes, kidney disease, and thyroid disorders.
3. General Reagent and Buffer Preparation in Pharmaceutical and Food Testing Laboratories
Primary Use: Enables the efficient dissolution of solids and preparation of standard solutions, buffers, and mobile phases for HPLC, UV‑Vis spectrophotometry, and other analytical methods in pharmaceutical quality control and food safety testing laboratories.
How it helps: For the pharmaceutical QC analyst and food safety technician, the MS-PB’s robust construction and chemical‑resistant work plate provide a reliable stirring platform for daily solution preparation. The 3‑liter capacity is adequate for most routine buffer and standard solution batches. The maintenance‑free brushless motor can run continuously for extended periods without overheating. For the patient, properly prepared standards and quality control samples ensure the accuracy and safety of pharmaceutical products and food supplies.

SECONDARY & SUPPORTIVE USES

1. Educational and teaching laboratory stirring: Serves as an affordable, user‑friendly teaching tool for undergraduate and graduate students in chemistry, biology, and clinical laboratory science courses, allowing them to learn the principles of magnetic stirring and solution preparation on a compact, durable benchtop unit.
2. Dissolution testing simulation for early‑stage drug development: Provides an economical stirring source to simulate dissolution test conditions for solid oral dosage forms (tablets, capsules) placed in beakers containing buffer solutions, useful for preliminary formulation screening when a full dissolution apparatus is not required.
3. Sample homogenization for environmental and water testing: Prepares liquid samples for heavy metal analysis, nutrient determination, and organic pollutant screening by maintaining solid particles in suspension, with the chemical‑resistant Nylon+GF plate durable enough for occasional exposure to acidic or alkaline solutions.
4. Routine stirring for pH calibration and titration: Provides stable, consistent stirring of solutions during pH meter calibration and manual titrations, ensuring uniform ion concentration around the electrode for accurate measurements.
5. General mixing in industrial and research laboratories: Suitable for mixing chemical solutions, dissolving powders, and preparing suspensions in industrial QC labs, research institutions, and pilot plants where an economical, non‑heating stirrer is sufficient.
KEY PRODUCT FEATURES

1.BASIC IDENTIFICATION ATTRIBUTES

  • Device Type: A non‑heating, analog magnetic stirrer with a Nylon+GF work plate.
  • Designation: MS-PB Magnetic Stirrer.
  • Key Components:
    • 5‑inch (φ135 mm) Nylon+GF (glass fiber reinforced) work plate – chemical‑resistant and durable
    • Maintenance‑free, spark‑free brushless DC motor
    • Analog speed control dial (0–1500 rpm, stepless)
    • LED power indicator light
    • Compact metal or ABS plastic housing (depending on variant)
    • Non‑slip rubber feet for stability
    • Universal power supply (100‑240 V, 50/60 Hz) or fixed input (220 V, 50 Hz) depending on regional model

2.TECHNICAL & PERFORMANCE PROPERTIES

  • Work plate dimensions: φ135 mm (5 inches).
  • Work plate material: Nylon+GF (glass fiber reinforced nylon) – resistant to many common laboratory chemicals, including alcohols, dilute acids, dilute alkalis, and salts.
  • Motor type: Maintenance‑free, spark‑free brushless DC motor.
  • Maximum stirring capacity (H₂O): 3 liters.
  • Speed range: 0 to 1500 rpm (stepless analog control).
  • Speed display: Analog scale (dial).
  • Maximum stir bar length: 40 mm.
  • Number of stirring positions: 1.
  • Power consumption: Approximately 15–30 W.
  • Voltage/Frequency: 100‑240 V, 50/60 Hz (universal) or 220 V/50 Hz depending on model.
  • Dimensions (W × D × H): 150 × 190 × 95 mm (approximate).
  • Weight: Approximately 1.2 kg.
  • Operating conditions: 5–40 °C, ≤80 % relative humidity.
  • Certifications: CE, RoHS (pending specific regional approvals).

3. PHYSICAL & OPERATIONAL PROPERTIES

  • Construction: Compact and lightweight benchtop design with a chemical‑resistant Nylon+GF work plate and a durable metal or ABS plastic housing. The work plate is easy to clean and resists corrosion from common laboratory chemicals.
  • Operation: Simple, intuitive one‑knob control. Turn the dial clockwise to increase stirring speed from 0 to 1500 rpm. The LED indicator shows when the unit is powered on.
  • Motor technology: Brushless DC motor provides quiet, vibration‑free operation, long life, and spark‑free safety – suitable for use in environments where flammable solvents may be present.
  • Stirring system: Strong magnets provide adequate magnetic coupling for stir bars up to 40 mm in length. The motor delivers consistent torque across the speed range.
  • Safety features: The brushless motor is spark‑free, reducing ignition risk. The housing provides basic protection against electrical shock. The unit has no heating element, eliminating burn hazards.
  • Portability: Lightweight (1.2 kg) and compact, easily moved between workstations.
  • Maintenance: The brushless DC motor is maintenance‑free. The Nylon+GF work plate can be cleaned with a mild detergent and a soft, damp cloth. No routine lubrication or brush replacement is required.
  • Included accessories: Standard package includes the MS-PB magnetic stirrer, one PTFE‑coated magnetic stir bar (approx. 25 mm length), and a power cord.

4. SAFETY & COMPLIANCE ATTRIBUTES

  • Regulatory Status: General laboratory equipment for in vitro diagnostic (IVD) use. Manufactured under ISO 9001 quality management systems. CE certified (depending on regional model).
  • Chemical Safety: The Nylon+GF work plate is resistant to many common laboratory chemicals, including alcohols, dilute acids, dilute alkalis, and salt solutions. Avoid prolonged exposure to strong organic solvents (e.g., acetone, chloroform) which may damage the surface.
  • Electrical Safety: Designed with a brushless, spark‑free DC motor, making it suitable for use in environments where flammable solvents may be present. The housing provides basic protection against electrical shock.
  • Fire Safety: The metal housing (or flame‑retardant ABS) and non‑flammable work plate provide basic fire protection. The primary fire hazard is the flammable liquids being stirred.
  • Quality Assurance: Each unit is factory‑tested before shipment. The instrument is backed by a manufacturer’s warranty (typically 1‑2 years, depending on region).

5. STORAGE & HANDLING ATTRIBUTES

  • Storage: Store in a clean, dry, dust‑free environment at room temperature (15–30 °C) when not in use.
  • Installation: Place the instrument on a stable, level, non‑flammable laboratory benchtop away from flammable materials, volatile solvents, and strong magnetic fields. Allow adequate clearance for ventilation.
  • Cleaning: Unplug the unit before cleaning. Wipe the Nylon+GF work plate and the housing with a soft, damp cloth using a mild laboratory detergent or 70 % isopropyl alcohol. Do not immerse the unit in liquid. Do not use abrasive cleaners or metal‑scouring pads, which may scratch the work plate surface.
  • Pre‑use inspection: Before each use, inspect the power cord and plug for any damage. Ensure the work plate is clean, dry, and free of chemical residues. Check that the magnetic stir bar is in good condition without chips or cracks.
  • Operation: Place the stirring vessel (e.g., a beaker) centrally on the work plate and add the magnetic stir bar. Plug in the unit. Turn the speed dial clockwise from “0” to the desired speed. Always start at a low speed (100–200 rpm) to allow the stir bar to couple correctly before gradually increasing to the target speed.
  • Cooling down: Not applicable (non‑heating model).
  • Periodic verification: Periodically verify stirring performance by observing the stir bar coupling at the set speed.

6. LABORATORY & CLINICAL APPLICATIONS

  • Primary Application: General‑purpose, non‑heating stirring for routine preparation of buffers, reagents, and quality control samples in clinical diagnostics, pharmaceutical quality control, food and feed analysis, environmental testing, and academic research laboratories where an economical and simple magnetic stirrer is sufficient.
  • Clinical Role: A basic but essential benchtop instrument for hospital and clinical chemistry laboratories, pharmaceutical QC labs, and teaching institutions. Suitable for low‑volume (3 L) mixing tasks such as dissolving reagents, preparing standard solutions, and mixing patient samples with diagnostic reagents.
SAFETY HANDLING PRECAUTIONS

1. SAFETY PRECAUTIONS

  • Magnetic Field Interference: The stirrer contains permanent magnets. People with implanted medical devices (e.g., pacemakers) should keep a safe distance of at least 30 cm from the operating stirrer. Do not place the instrument near credit cards, hard drives, or other magnetic‑sensitive equipment.
  • Vessel and Stir Bar Selection: Use only flat‑bottomed vessels (beakers, Erlenmeyer flasks) that sit flush on the work plate. Ensure the magnetic stir bar is in good condition without chips or cracks and is properly centered in the vessel before starting. Do not exceed the maximum stir bar length of 40 mm.
  • Start Slowly: Always start stirring at the lowest speed and gradually increase to the desired level. A sudden high‑speed start may cause the stir bar to decouple, spin erratically, or strike the vessel wall, leading to splashing or vessel breakage.
  • Electrical Safety: Do not operate the instrument with wet hands. Ensure the power cord does not come into contact with liquids or sharp edges. Use only the supplied grounded power cord (if applicable) and ensure the outlet provides proper grounding. Do not operate if the power cord is damaged.
  • Chemical Compatibility: The Nylon+GF work plate is resistant to many common laboratory chemicals, but prolonged exposure to strong organic solvents (e.g., acetone, dichloromethane, chloroform) may cause surface degradation. Clean spills promptly. Refer to the Safety Data Sheet (SDS) for specific chemicals.
  • Spill Management: If a liquid spill occurs on the work plate during operation, turn off the speed dial to “0” immediately. Unplug the unit, wipe the spill clean, and allow the work plate to dry thoroughly before resuming use.
  • Operating Environment: Use the MS-PB indoors only, on a stable, level benchtop. Do not use in explosive atmospheres or in the presence of flammable gases or vapors. The permissible ambient temperature range is 5–40 °C with relative humidity not exceeding 80 %.
  • Cleaning: Unplug the unit before cleaning. Do not immerse the unit in liquid. Do not use abrasive cleaners or metal scouring pads that could scratch the work plate.
  • Training Requirement: Only trained laboratory personnel should operate the MS-PB Magnetic Stirrer. Users should read and understand the operator’s manual before first use.

2. FIRST AID MEASURES

  • Chemical Splash to Eyes: If a biological or chemical sample splashes into the eyes, immediately flush with water for at least 15 minutes and seek medical attention.
  • Skin Contact with Chemical Sample: Wash contaminated skin with soap and water thoroughly for at least 5 minutes. If irritation develops, seek medical evaluation. Refer to the SDS for the specific chemical.
  • Sharps Injury (Broken Glassware): If a broken vessel punctures the skin, allow the wound to bleed freely, wash with soap and water for 15 minutes, apply antiseptic and a sterile bandage. If the vessel contained patient biological material, follow the facility’s exposure management protocol for bloodborne pathogens.
  • Inhalation of Chemical Vapors: If vapors from volatile reagents are inhaled, move to fresh air immediately. Seek medical attention if symptoms persist.
  • Electrical Shock: If an electrical shock incident occurs, disconnect power at the circuit breaker before assisting the victim. Do not touch the victim until power is disconnected. Call emergency medical services.

3. FIRE FIGHTING MEASURES

  • Flammability: The Nylon+GF work plate and plastic housing components are combustible. Do not operate near flammable solvents, gases, or volatile materials. The primary fire hazard is the flammable liquids being stirred.
  • Extinguishing Media: Use carbon dioxide (CO₂) or a dry chemical (ABC‑class) extinguisher for fires involving electrical equipment. Do not use water on electrical fires.
  • Fire Response: In case of fire, disconnect the instrument from its power source if safe to do so. Evacuate the immediate area. Use an appropriate extinguisher for small, contained fires. For larger fires, evacuate the laboratory and call emergency services.