Magnetic Stirrer (DMS4)

Magnetic Stirrer (DMS4)

PRIMARY CLINICAL & DIAGNOSTIC USES

1. General Solution Mixing and Reagent Preparation in Clinical Laboratories
Primary Use: Provides a non-heating, LCD digital magnetic stirrer with a 4-inch glass ceramic work plate (100×100 mm) and a maintenance-free brushless DC motor, used for the efficient and homogeneous mixing of aqueous solutions, buffers, reagents, and clinical laboratory preparations, with a maximum stirring capacity of 10 liters and a stepless speed range of 50 to 1500 rpm in 1 rpm increments.

How it helps: For the clinical laboratory scientist and medical technologist, the DMS4’s maintenance-free, spark-free brushless DC motor delivers consistent, reliable stirring performance ideal for preparing common laboratory reagents, buffers, and diluents. The high-resolution LCD display simultaneously shows the set and actual speed values, allowing clear real-time monitoring without toggling modes. The chemical-resistant glass ceramic work plate withstands strong acids and strong alkalis, ensuring durability against aggressive reagents. For the patient, the consistent and reproducible mixing of reagents supports the accuracy of diagnostic test results, ensuring reliable clinical decision-making.

2. Sample Preparation for Water Quality and Environmental Monitoring
Primary Use: An ideal tool for general laboratories performing water quality analysis and environmental monitoring, the DMS4 is used for mixing samples and reagents for key tests, such as Chemical Oxygen Demand (COD), heavy metal analysis, and total suspended solids measurement, and for preparing liquid cultures for microbiological analysis of environmental samples.

How it helps: For the environmental laboratory technician, the DMS4’s digital control with 1 rpm speed resolution allows precise, repeatable stirring conditions across multiple samples, ensuring consistent reagent mixing and sample homogeneity. The IP21-rated, corrosion-resistant full-metal housing provides good heat dissipation and reliable fire protection, while the high-efficiency infusion platform and waterproof edge design prevent liquid from entering internal electronics and corroding components. For the public, reliable water quality analysis directly supports community health by ensuring safe drinking water and monitoring environmental pollution.

3. Dissolving Solids and Preparing Solutions for Pharmaceutical and Food Quality Control
Primary Use: Used for the efficient dissolution of solids and the preparation of standard solutions, buffers, and mobile phases in pharmaceutical and food analysis quality control laboratories, ensuring homogeneity for high-performance liquid chromatography (HPLC), UV-Vis spectrophotometry, and other analytical testing.

How it helps: For the pharmaceutical and food safety quality control analyst, the DMS4’s robust stirring action ensures that powders, tablets, or other solid samples are completely dissolved and mixed into solution before analysis. The selected high-temperature resistant strong magnet provides strong stirring force suitable for mixing viscous liquids. The brushless DC motor is maintenance-free, and the chemical-resistant glass ceramic top plate provides excellent durability against aggressive solvents and acids. For the pharmaceutical patient and consumer, accurate sample preparation is critical for verifying the potency of drugs and ensuring the safety and quality of the food supply.

4. Liquid Culture Mixing and Preparation in Clinical Microbiology
Primary Use: Enables the gentle yet thorough mixing of liquid cell cultures, microbial broths, and growth media in clinical microbiology laboratories to maintain a uniform cell suspension and optimize growth conditions, without the risk of heat damage to sensitive biological samples.

How it helps: For the clinical microbiology technologist, the DMS4’s digital speed control with a range of 50–1500 rpm and 1 rpm increments allows precise agitation, ensuring that bacterial and yeast cultures are evenly oxygenated and mixed without damaging the cells. The brushless DC motor produces no sparks and operates with low noise, making it safe for use in environments where flammable solvents or volatile reagents may be present, and the maintenance-free design ensures reliable performance over extended periods of continuous operation. For the patient, the careful preparation of culture media and the incubation of samples are essential steps in the accurate identification of pathogenic microorganisms, leading to timely and appropriate antibiotic therapy.

SECONDARY & SUPPORTIVE USES

1. Unattended Operation via Programmable Timer: Features a programmable timer ranging from 1 minute to 99 hours 59 minutes, allowing for unattended operation with automatic shutdown upon completion and an audible buzzer alert, preventing over-mixing and saving valuable laboratory time.

2. Safe Operation with Safety Lock: Includes a safety lock function that prevents accidental changes to operating status once parameters are set, ensuring that critical experiments are not disrupted by unintended adjustments and providing peace of mind during unattended operation.

3. PC Remote Control and Data Logging via RS232 Interface: Equipped with RS232 data interface for remote PC control, enabling users to operate the stirrer from within a fume hood or to integrate it into automated laboratory workflows, with the ability to log speed and time data for quality assurance records.

4. Electrochemical Measurements and pH Titration: Provides stable and consistent stirring of solutions during electrochemical experiments, such as pH calibration and measurement, ion-selective electrode analysis, and titration, ensuring a uniform ion concentration around the electrode for fast, accurate readings.

5. Heavy Metal and Trace Element Analysis Sample Digestion: Prepares liquid and digested samples for heavy metal analysis using atomic absorption spectroscopy (AAS) or inductively coupled plasma mass spectrometry (ICP-MS) by maintaining solid particles in suspension for accurate sampling, with chemical-resistant glass ceramic top plate suitable for acidic solutions.

6. Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) Water Testing: Prepares samples and reagents for essential water quality tests by ensuring the complete dissolution and uniform mixing of the strong oxidizing agents and other chemicals used in oxygen demand analysis, with consistent stirring for reproducible results.

7. Viscosity Testing of Liquid Samples: Maintains liquid samples under controlled, constant stirring for viscosity measurement using viscometers, supporting quality control in pharmaceutical, chemical, and food industries where sample homogeneity is critical.

8. General and Educational Laboratory Use: Serves as an economical, user-friendly digital teaching tool for demonstrating the principles of solution preparation, mixing, and chemical reaction kinetics in high school and university chemistry and biology laboratory courses, with an intuitive LCD interface and 1 rpm speed resolution for precise demonstration.

9. Research and Development Applications: Provides a reliable, hands-on stirring solution for research scientists performing small-scale chemical synthesis, media optimization, or other reaction studies requiring precise, repeatable agitation over extended periods, with the ability to run continuously for hours or days.

10. Buffer, Mobile Phase, and Standard Solution Preparation: Prepares precise chemical solutions for high-performance liquid chromatography (HPLC), gas chromatography, and other analytical chemistry techniques by thoroughly dissolving solids and ensuring a homogeneous mixture, with digital speed control for repeatability across multiple batches.