Laboratory Stirrer

ULPMAT laboratory Stirrer is designed for sample mixing, solution preparation and reaction stirring in chemical, pharmaceutical, materials and food-related laboratories.

The range includes basic magnetic stirrers, heating magnetic stirrers and electric mechanical stirrers, covering laboratory conditions from small-scale experiments to medium-scale processing. The equipment features stable operation, simple controls and convenient maintenance.

Laboratory Stirrer Series

Series	Type	Main Function	Typical Application
Magnetic Stirrer Series	Magnetic stirring	Liquid mixing and homogenization	Low- to medium-viscosity liquids
Heating Magnetic Stirrer Series	Magnetic stirring + heating	Mixing and temperature-controlled heating	Synthesis, extraction, reflux
Electric Stirrer Series	Mechanical stirring	Mixing of medium- to high-viscosity materials	Slurries, suspensions, polymer systems

1. Magnetic Stirrer Series

Magnetic stirrers use magnetic force to drive a stirring bar, eliminating the need for a mechanical drive shaft and reducing the risk of leakage. They are suitable for mixing low- to medium-viscosity liquids.

The series includes basic non-heating magnetic stirrers and heating magnetic stirrers for applications requiring simultaneous mixing and temperature control.

MS-5 Basic Magnetic Stirrer

Compact Magnetic Stirrer for Routine Laboratory Mixing

The MS-5 basic stirrer is a general-purpose laboratory mixing device designed for liquid stirring without heating. Its self-developed motor and simple, durable construction support long-term continuous operation, making it suitable for routine liquid-phase mixing experiments.

Features & Benefits

• Wide speed range from 50 to 2000 r/min, supporting applications from small samples to 5 L water capacity.
• Stable motor performance for long-term continuous operation.
• Simple speed control for convenient operation and maintenance.
• Magnetic drive eliminates the mechanical stirring shaft and associated leakage risk.
• Compact design saves valuable laboratory bench space.

Technical Specifications

Parameter	MS-5
Model	MS-5
Maximum Stirring Capacity (Water)	20–5000 ml
Stirring Speed	50–2000 r/min
Motor Torque	40 mN·m

Typical Applications

Suitable for university and college laboratories, research institutes, environmental testing and fine chemical applications, including solution preparation, reagent mixing and routine liquid-phase reactions.

2. Heating Magnetic Stirrer Series

Heating magnetic stirrers combine magnetic stirring with controlled heating, making them suitable for experiments where mixing and temperature control are required simultaneously.

MS-20H Heating Magnetic Stirrer

Magnetic Stirring with Precise Temperature Control

The MS-20H heating magnetic stirrer integrates magnetic stirring with precise heating and temperature control. Equipped with an external PT1000 temperature sensor, it can measure the actual liquid temperature rather than relying only on the heating plate temperature.

With a maximum water stirring capacity of 20 L, the MS-20H is suitable for synthesis, extraction and reflux experiments requiring simultaneous heating and stirring.

Features & Benefits

• Ceramic-coated silicon-aluminum alloy heating plate provides corrosion resistance and uniform heat transfer.
• External PT1000 temperature sensor measures liquid temperature for more accurate temperature control.
• ±0.5°C temperature control accuracy with 400°C over-temperature protection.
• Stable stirring-speed output for long-term continuous operation at elevated temperatures.
• Up to 20 L water stirring capacity, suitable for small- and medium-scale laboratory work.

Technical Specifications

Parameter	MS-20H
Model	MS-20H
Maximum Stirring Capacity (Water)	20–20,000 ml
Stirring Speed	50–2000 r/min
Motor Torque	40 mN·m
Working Plate Material	Silicon-aluminum alloy with ceramic coating
Temperature Sensor	External PT1000 sensor
Temperature Control Accuracy	±0.5°C
Heating Plate Temperature	Room Temperature–340°C
Liquid Temperature	Room Temperature–250°C
Over-temperature Protection	400°C

Typical Applications

Suitable for organic synthesis, pharmaceutical research and new material experiments, particularly processes requiring simultaneous heating and stirring, reflux or extraction.

3. MS-HT Series — Heating Bath Magnetic Stirrer

Constant-Temperature Magnetic Stirring for Reflux and High-Temperature Reactions

The MS-HT series heating bath magnetic stirrer uses a heating bath to provide controlled heating and supports both water-bath and oil-bath operation.

By integrating magnetic stirring with constant-temperature heating, the series is suitable for teaching and research laboratories as well as experiments requiring reflux and long-duration high-temperature reactions.

Features & Benefits

• Heating-bath design provides efficient heat transfer and rapid temperature increase.
• Digital display of stirring speed and temperature for convenient monitoring of experimental conditions.
• Water-bath and oil-bath operation for different temperature requirements.
• Suitable for reflux setups and long-duration reactions.
• Stable construction and simple operation for teaching laboratories and research applications.
• Multiple safety protection functions for laboratory operation.

Technical Specifications

The MS-HT series includes multiple sub-models designed for different bath capacities and temperature ranges.

Parameter	MS-HT Series
Working Mode	Magnetic stirring + constant-temperature heating
Heating Method	Water bath / oil bath
Representative Sub-models	MS-HT-100, MS-HT-200
Display	Digital speed and temperature display
Bath Media	Water, heat-transfer oil

The series can cover configurations such as DF-101, SZCL, RTC-2, RG-18 and HJ-85 type heating magnetic stirrers.

Typical Applications

Suitable for university and college teaching laboratories, chemical, pharmaceutical and food-related applications, including reflux reactions, extraction, distillation and synthesis experiments.

4. Electric Stirrer Series

It use a motor-driven mechanical stirring shaft and impeller rather than magnetic coupling. They are suitable for materials that cannot be effectively mixed with magnetic stirring, including higher-viscosity liquids, slurries and suspensions.

This series focuses on laboratory and small-scale research applications and does not include high-end overhead stirrers or homogenizing/emulsifying equipment.

ME-30 Laboratory Electric Stirrer

Digital-Speed Mechanical Stirrer for Low- to High-Viscosity Materials

The ME-30 digital electric stirrer uses a DC brushless motor to drive the stirring shaft and is designed for mixing materials ranging from low to high viscosity.

It is particularly suitable for slurries, suspensions and polymer systems, providing mechanical stirring where magnetic stirrers may not provide sufficient mixing performance. The ME-30 is designed for laboratory research and small-scale development work.

Features & Benefits

• Maintenance-free DC brushless motor with an integrated overload protection circuit.
• Digital display of actual rotational speed with stepless speed adjustment.
• Built-in cooling fan supports long-term continuous operation.
• Hollow-shaft design enables quick installation and removal of the stirring rod.
• Compatible with different stirring impellers, including propeller-type blades, for different material characteristics.

Technical Specifications

Parameter	ME-30
Model	ME-30
Motor Power	110 W
Power Supply	220 V / 50 Hz
Speed Range	50–2000 rpm
Speed Display	Digital display
Speed Control	Stepless speed control
Stirring Rod Clamping Range	0.5–10 mm
Maximum Processing Capacity (Water)	200–30,000 ml
Working Environment Temperature	0–40°C
Optional Accessories	Various stirring blades

Typical Applications

Suitable for polymer synthesis, coating slurries, suspensions, pharmaceutical and food formulations, particularly for high-viscosity materials or applications where magnetic stirring is insufficient.

Magnetic Stirrer vs. Electric Stirrer

Feature	Magnetic Stirrer	Electric Stirrer
Stirring Method	Magnetic drive	Mechanical drive
Stirring Shaft	No mechanical shaft	Mechanical stirring shaft
Leakage Risk	No shaft penetration	Depends on vessel/setup
Suitable Materials	Low- to medium-viscosity liquids	Low- to high-viscosity materials
Typical Capacity	Up to 20 L water*	Up to 30 L water
Heating Option	Available	Not specified for ME-30
Typical Applications	Solution mixing, synthesis, extraction	Slurries, suspensions, polymer systems

*Capacity depends on the specific model.

How to Choose a Laboratory Stirrer?

Choose MS-5 for Basic Liquid Mixing

For routine laboratory liquid mixing without heating, MS-5 provides a compact and simple magnetic stirring solution with a speed range of 50–2000 r/min.

Choose MS-20H for Heating + Stirring

For experiments requiring simultaneous stirring and temperature control, MS-20H combines magnetic stirring with an external PT1000 temperature sensor and supports liquid temperatures up to 250°C according to the supplied specifications.

Choose MS-HT for Bath Heating

For reflux and high-temperature reactions requiring water-bath or oil-bath heating, the MS-HT series provides integrated magnetic stirring and constant-temperature bath heating.

Choose ME-30 for Higher-Viscosity Materials

For slurries, suspensions and polymer systems, or when magnetic stirring is insufficient, the ME-30 mechanical electric stirrer provides direct motor-driven stirring and supports up to 30 L water capacity.

Typical Applications

ULPMAT laboratory Stirrer can be used across:

Chemical Research

Solution preparation, chemical reactions, synthesis and extraction.

Pharmaceutical Research

Sample preparation, formulation and laboratory-scale reaction processes.

Materials Research

Material synthesis, slurry preparation and suspension mixing.

Food & Formulation

Liquid mixing and preparation of laboratory formulations.

University & Research Laboratories

Routine teaching experiments, research and small-scale process development.

Optional Accessories

Depending on the equipment configuration, optional accessories can include:

• Stirring bars
• Stirring blades
• Temperature sensors
• Support stands
• Different types of stirring impellers

For special experimental conditions, contact ULPMAT for equipment and accessory selection.

Selection Guide

Your Requirement	Recommended Model / Series
Basic liquid mixing	MS-5
Magnetic stirring without heating	MS-5
Heating + magnetic stirring	MS-20H
Precise liquid temperature measurement	MS-20H
Water-bath heating	MS-HT Series
Oil-bath heating	MS-HT Series
Reflux reaction	MS-HT Series
High-temperature bath reaction	MS-HT Series
Slurry mixing	ME-30
Suspension mixing	ME-30
Polymer / higher-viscosity material	ME-30
Up to 30 L water processing capacity	ME-30

FAQs

Q1. What is the difference between a magnetic stirrer and an electric stirrer?

A magnetic stirrer drives a stirring bar through magnetic force without a mechanical drive shaft, making it suitable for low- to medium-viscosity liquids. An electric stirrer directly drives a mechanical stirring shaft and is better suited to higher-viscosity liquids, slurries and suspensions.

Q2. Which stirrer is suitable for basic laboratory mixing?

The MS-5 is designed for routine liquid mixing without heating, with a stirring speed range of 50–2000 r/min.

Q3. Which model provides both heating and stirring?

The MS-20H combines magnetic stirring with heating and temperature control. The MS-HT series combines magnetic stirring with water-bath or oil-bath constant-temperature heating.

Q4. What temperature can the MS-20H reach?

The heating plate temperature range is specified as room temperature to 340°C, while the liquid temperature is specified as room temperature to 250°C.

Q5. Which stirrer is suitable for high-viscosity materials?

The ME-30 electric stirrer is designed for low- to high-viscosity materials and is particularly suitable for slurries, suspensions and polymer systems.