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Product Description

The Labmart KERRO KHMS-3706 Digital Magnetic Stirrer with Hotplate is a high-capacity laboratory heating and stirring system designed for applications requiring controlled mixing and heating of samples up to 20 litres. It offers 200–1500 RPM stirring, heating up to 500°C, a large 180 × 180 mm ceramic-coated platform, digital LCD display and optional external temperature-sensor control.

Product Overview

The KERRO KHMS-3706 Digital Magnetic Stirrer with Hotplate is designed for laboratory applications requiring simultaneous heating and magnetic stirring of relatively large liquid volumes.

With a 20-litre maximum stirring capacity, the unit is suitable for larger-scale solution preparation, chemical mixing, reaction work and other laboratory processes. Its brushless motor provides controlled stirring from 200 to 1500 RPM, while the ceramic-coated hotplate provides heating up to 500°C.

The instrument incorporates a microprocessor-based control system, backlit LCD display and safety features. The stirring speed gradually ramps up toward the selected value, helping reduce sudden splashing or displacement of the stirring bar.

Key Features and Benefits

  • 20 L maximum stirring capacity
  • 200–1500 RPM stirring range
  • Heating range up to 500°C
  • Large 180 × 180 mm ceramic-coated hotplate
  • 500 W heating power
  • Brushless motor
  • LCD display for speed and temperature
  • 1 RPM speed display accuracy
  • 0.1°C temperature display accuracy
  • Microprocessor/fuzzy-logic control
  • Automatic stirring-bar displacement detection and capture
  • Two adjustable safety circuits
  • Residual-heat warning display
  • Optional PT100 temperature sensor
  • Optional/available RS-232 PC interface
  • Controlled speed ramp-up helps minimise splashing
  • Suitable for continuous and unattended laboratory operation when used according to safety requirements

4. Technical Specifications

Specification Details
Product Type Digital Magnetic Stirrer with Hotplate
Model KHMS-3706
Brand Labmart
Original Series KERRO KHMS-3706
Maximum Stirring Capacity 20 L (H₂O)
Stirring Positions 1
Stirring Speed Range 200–1500 RPM
Speed Display LCD
Speed Display Accuracy 1 RPM
Motor Type Brushless Motor
Motor Rating Input 18 W
Motor Rating Output 10 W
Hotplate Yes
Platform Size 180 × 180 mm
Work Surface Ceramic-coated surface
Heating Power 500 W
Heating Temperature Range Room Temperature to 500°C
Temperature Display LCD
Temperature Display Accuracy 0.1°C
Heating Control Accuracy 1°C
External Temperature Sensor PT100 / PT1000 configuration specified in source literature
Control Accuracy with External Sensor Up to 0.2°C in the specified sensor configuration
RS-232 Interface Yes
Voltage 110/220 V
Permissible Ambient Temperature 5–40°C
Permissible Ambient Humidity Up to 80% RH
Protection Class IP42
Dimensions 390 × 300 × 230 mm
Maximum Stirring Bar Position/Length Specification 80 mm
No. of Stirring Positions 1

Specification note: The available product information contains a variation between an older technical specification showing a 380°C heating range and the KHMS-3706 product specification showing RT–500°C. For the KHMS-3706 configuration, the 500°C specification has been used here.


5. Applications

  • Large-volume solution preparation
  • Chemical mixing
  • Reagent preparation
  • Buffer preparation
  • Chemical synthesis
  • Laboratory reaction work
  • Pharmaceutical formulation research
  • Biotechnology applications
  • Research and development
  • Quality-control laboratories
  • Sample preparation
  • Controlled heating and agitation
  • Industrial laboratory processes
  • Educational laboratory experiments

6. Suitable For

  • Chemistry laboratories
  • Pharmaceutical laboratories
  • Biotechnology laboratories
  • Research institutions
  • Industrial laboratories
  • Chemical processing laboratories
  • Quality-control departments
  • R&D facilities
  • Educational institutions
  • Large-volume laboratory sample preparation

7. Product Benefits

  • 20 L capacity: Suitable for larger-volume laboratory mixing.
  • High-temperature heating: Supports heating applications up to 500°C.
  • Wide speed range: 200–1500 RPM provides flexible stirring control.
  • Large ceramic-coated platform: 180 × 180 mm working area accommodates suitable larger vessels.
  • Brushless motor: Designed for stable operation.
  • Gradual speed ramping: Helps reduce splashing and sudden movement of the stirring bar.
  • Digital LCD display: Allows convenient monitoring of speed and temperature.
  • Microprocessor control: Provides precise adjustment of operating parameters.
  • External temperature control: Optional temperature sensing can provide feedback from the sample.
  • Safety monitoring: Includes safety circuits and residual-heat indication.
  • RS-232 connectivity: Enables PC-based control in supported configurations.

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