Introduction
A digital hotplate stirrer is a laboratory instrument that combines a heating hotplate with a magnetic stirrer, providing heating and stirring of liquids in beakers, flasks, and other vessels, and it is used in chemistry, biology, and many other laboratories for heating and mixing solutions. The instrument consists of a flat heating plate, a heating element, a magnetic stirrer motor that drives a magnetic stir bar in the vessel, a temperature controller, and a digital display; the user places the vessel with the liquid and a magnetic stir bar on the plate, sets the temperature and the stirring speed, and the instrument heats the liquid to the set temperature while the rotating magnetic field stirs the liquid, providing uniform heating and mixing, and the digital display shows the set and actual temperature and the stirring speed, and the instrument provides precise temperature control and adjustable stirring, and it may include a temperature probe for measuring the temperature of the liquid. Digital hotplate stirrers are used for heating and stirring solutions for dissolving, for mixing reagents, for preparing solutions, for heating reactions, for boiling, for evaporation, for performing digestions, and for many other applications, in chemistry, biochemistry, food, and environmental laboratories, and they are available in various sizes, with features such as digital temperature control, adjustable stirring speed, and overtemperature protection. With their combination of heating and stirring, digital hotplate stirrers are essential instruments for laboratory heating and mixing.
Digital Hotplate Stirrer LDHS-T2011
Digital Hotplate Stirrer is a microprocessor controlled portable unit with a top plate temperature of 0 °C to 380 °C. Features an easy to read digital display with an adjustable settin...
Digital Hotplate Stirrer LDHS-T2010
Digital Hotplate Stirrer is a microprocessor controlled portable unit with a top plate temperature of 0 °C to 380 °C. Features an easy to read digital display with an adjustable settin...
Digital Hotplate Stirrer LDHS-T2013
Digital Hotplate Stirrer is a compact design that combines efficient heating and stirring with a temperature range of 0 to 350℃. It is equipped with advanced an stirring from 200 to 160...
Digital Hot Plate Stirrer LDHS-T2012
Digital Hot Plate Stirrer can heat and stir up to 5 hot plate ensures uniform heat distribution and chemical resistance, reaching temperatures up to 350℃. Our stirrer offers a user-frie...
Digital Hotplate Stirrer LDHS-T2012
Digital Hotplate Stirrer is suitable for both heating and stirring reaction flasks of a maximum of 20L. It offers a stirring speed range of 200 to 1200 rpm with a single stirring point. ...
Digital Hotplate Stirrer LDHS-T2010
Digital Hotplate Stirrer is a microprocessor controlled portable unit with a top plate temperature of 0 °C to 500 °C. Features an easy to read digital display with an adjustable settin...
Digital Hotplate Stirrer LDHS-T2011
Digital Hotplate Stirrer is ideal for heating and mixing applications. Schott glass ceramic surface provides outstanding resistance to chemicals against temperature shocks up to 700 °C....
Standards
IEC 61010-2-051:2018-Particular requirements for laboratory equipment for mixing and stirring
Complies with the above standards, but is not limited to them.
Features
1. Digital hotplate stirrer for simultaneous heating and magnetic stirring of samples.
2. Precise digital temperature and speed control for laboratory heating and mixing.
3. Suitable for chemical, biological, pharmaceutical, food, environmental and research labs.
4. Includes hotplate, magnetic stirrer, digital controller, stir bar and operation manual.
5. Supports simultaneous heating and stirring for chemical reactions and sample preparation.
FAQ
Q1: What testing scenarios is this stirrer mainly applied to?
A: The digital hotplate stirrer is used in chemical laboratories, biological research, pharmaceutical development, food and beverage, environmental testing, industrial quality control and research to simultaneously heat and magnetically stir liquid samples for chemical reactions, sample preparation, dissolution, extraction and general laboratory heating/mixing applications. It supports chemical reaction heating and stirring (synthesis, digestion, crystallization), sample preparation and dissolution (solid dissolution, reagent preparation), environmental sample digestion and extraction, food and beverage sample preparation, pharmaceutical formulation and dissolution testing, biological sample incubation with mixing, and general laboratory heating and stirring. The combined heating and magnetic stirring capability provides efficient, controlled sample processing in a single compact instrument, widely used in chemistry and biology laboratories for routine and research applications.
Q2: What standards does the stirrer comply with?
A: The digital hotplate stirrer complies with relevant IEC 61010 laboratory electrical safety standards, IEC 61326 for electromagnetic compatibility, and applicable GB/T standards for laboratory heating and stirring equipment. The hardware complies with applicable safety standards for heated surfaces and rotating magnetic fields. Temperature accuracy should be verified with a calibrated reference thermometer for critical applications. Users should verify compliance with specific facility requirements. For pharmaceutical use, follow applicable GMP/GLP and data integrity requirements.
Q3: What is the warranty period for the whole stirrer and key components?
A: The whole digital hotplate stirrer is covered by a 12-month warranty. The heating element, magnetic stirrer drive, digital controller, hotplate surface and housing are covered, while stir bars and fuses are consumables or accessories. Damage from improper use, overheating, spill damage or unauthorized repair is excluded. Extended service contracts may be available.
Q4: Is this device difficult to operate? Is professional training required?
A: Operation is simple: place vessel with stir bar on hotplate, set temperature and speed, and start. No professional training is required for basic use, but users should follow proper vessel selection, stir bar selection, temperature setting, hot surface safety and spill prevention procedures. We provide an operation manual and remote guidance. The hotplate surface can reach high temperatures (up to 300-500 degrees C) - use caution.
Q5: What is the typical lead-time for order delivery?
A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.
Q6: Is regular calibration required? What is the recommended calibration cycle?
A: Temperature calibration against a reference thermometer recommended every 6-12 months for critical applications. Stirring speed verification periodically. Heating element condition checked. Routine cleaning of hotplate surface (spills can carbonize and affect heating). Full system performance check annually. Controller accuracy verified.
Q7: Are supporting consumables universal?
A: Magnetic stir bars (various sizes, shapes, coatings), temperature probes (if external) and fuses are available from laboratory suppliers, though stir bar size should match the vessel. Long-term consumable cost is very low for a hotplate stirrer.
Q8: Can I customize parameters or supporting accessories?
A: Customization includes hotplate size, temperature range, stirring speed range, stirring capacity (volume), control type (digital, analog, programmable), external temperature probe capability, timer, data logging, corrosion-resistant coating and accessories. Additional stir bars, probes and accessories can be ordered separately. Custom orders extend delivery lead-time.
Q9: Does the purchase include on-site installation and commissioning service?
A: No complex installation is required. The package includes the digital hotplate stirrer, stir bar and instruction manual. On-site service is not included.
Q10: What types of samples are compatible with this equipment?
A: The digital hotplate stirrer heats and stirs liquid samples in beakers, flasks, bottles and other heat-resistant magnetic-stirrer-compatible vessels within the vessel size, temperature range, stirring volume and specification. Different applications require specific stir bars (size, shape, coating - PTFE-coated for general, glass-coated for high temperature/corrosive). Very large volumes may require more powerful stirring or overhead stirrer. Very viscous samples may not stir effectively with magnetic stirring (use overhead stirrer). Users should use heat-resistant glassware appropriate for the temperature (borosilicate glass for up to ~200 degrees C, metal containers for higher), select appropriate stir bar size for the vessel (stir bar should be ~1/3 to 1/2 of vessel diameter), ensure stir bar is properly centered and spinning (not jumping - can indicate speed too high or stir bar too small), set appropriate temperature (use external temperature probe for accurate sample temperature - hotplate surface temperature differs from sample temperature), avoid heating flammable solvents on open hotplate (use heating mantle or water/oil bath, and work in fume hood), use the stirrer on a stable, heat-resistant surface, avoid spills on hot surface (can cause thermal shock to glassware and create fumes), clean spills promptly (when cool), and follow proper hot surface safety (use tongs/heat-resistant gloves, do not touch hot surface). The hotplate should not be left unattended at high temperatures (fire hazard, especially with flammable solvents). For long-duration heating, use a timer or temperature controller with safety cutoff. The stir bar should be removed from the vessel before pouring (use magnetic stir bar retriever). The hotplate surface should be cleaned regularly (carbonized spills can affect heat transfer and are difficult to remove). For corrosive samples, use appropriate vessel and clean spills immediately (corrosive spills can damage the hotplate surface). The stirring speed should be increased gradually (sudden high speed can cause stir bar to jump or spill). The temperature should be set appropriately (do not exceed the glassware or sample temperature rating). For applications requiring precise temperature control, use an external temperature probe immersed in the sample (the hotplate surface temperature is not the same as the sample temperature, especially with viscous or large-volume samples). The hotplate stirrer should not be used for heating solid samples directly (use appropriate container). For magnetic stirring, ensure the vessel bottom is flat (round-bottom flasks may not work well with standard hotplate stirrers - use heating mantle for round-bottom flasks).
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