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MARSHALL Select MS-OT20LC Overhead Stirrer, 20L

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Maximum Stirring Capacity
20L
Speed Range
50 to 2,200 RPM
Speed Control Accuracy
± 3 RPM
Maximum Viscosity
100,000 mPas
Maximum Torque
40 Ncm
All 18 specifications
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Specifications 18

Brands
Marshall Select
New/Used
New
Maximum Stirring Capacity
20L
Speed Range
50 to 2,200 RPM
Speed Control Accuracy
± 3 RPM
Maximum Viscosity
100,000 mPas
Maximum Torque
40 Ncm
Chuck Diameter Range
0.5 to 10 mm
Motor Input Power
60W
Motor Output Power
50W
Motor Type
Brushless DC motor
Display
LCD
Overload Protection
Visual alarm, motor automatic stop
Interface
RS232
Protection Class
IP21
Dimensions (W x D x H)
3.3 x 7.3 x 8.7 in. (8.3 x 18.6 x 22 cm)
Weight
13.2 lb. (6 kg)
Electrical Requirements
110/220V, 50/60Hz, 70W

Product description

Robust 20L overhead stirrer with high torque and precise control.

MARSHALL Select MS-OT20LC Overhead Stirrer, 20L

Maximum Stirring Quantity 20L Speed Range 50 to 2,200 RPM Maximum Viscosity 100,000 mPas

Features

  • High torque output of 40 Ncm ensures effective mixing performance
  • Features brushless DC motor for longevity and maintenance-free operation
  • Slow start-up function to prevent spills and splashes during use
  • LCD display for real-time monitoring of speed and torque
  • Through-shaft design allows for easy adjustment of the impeller position
  • RS232 interface for PC control and data transmission
  • Safety circuits include automatic stop in anti-stall or overload conditions
  • Visual alarms for overload protection enhance safety during operation
  • Torque trend display provides real-time information on viscosity changes
  • Capable of accepting pass-through stirrer rods for versatile setup options
  • IP21 protection class ensures basic protection against solid objects and dripping water

The MARSHALL Select MS-OT20LC Overhead Stirrer is designed to handle stirring capacities up to 20L, making it ideal for extensive laboratory applications. It operates within a speed range of 50 to 2,200 RPM with a high control accuracy of ± 3 RPM, supported by a robust brushless DC motor. The stirrer offers a maximum viscosity handling of 100,000 mPas and a torque output of 40 Ncm, ensuring effective mixing even with thick samples. Equipped with an advanced microprocessor, the MS-OT20LC provides precise speed control and includes features like a slow start-up to prevent spills and a safety circuit for overload conditions, which automatically stops the motor.

The MS-OT20LC’s through-shaft design facilitates easy adjustment of the impeller position, enhancing the flexibility and efficiency of mixing operations. The LCD display allows for real-time monitoring of both set and actual speed and torque, ensuring constant performance even as sample viscosities change. Additional features include an RS232 interface for PC control and data transmission, and visual alarms for overload protection. The IP21 protection class signifies basic protection against solid objects and dripping water, making this stirrer a dependable choice for busy laboratory environments.

INCLUDED: The MARSHALL Select MS-OT20LC Overhead Stirrer, 20L includes:

  • Key of Drill Chuck
  • Power Cord
  • Operator's Manual
  • Manufacturer's Documentation
  • 1 Year Manufacturer's Warranty

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Frequently asked questions

How long does laboratory equipment typically last?

With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.

Can I get service for older equipment?

Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.

Where can I buy parts?

Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.

What is the typical lead time for refurbished equipment?

Two to six weeks, depending on refurbishment scope and whether calibration is included.

Does laboratory equipment ship internationally?

We ship to 38 countries. Crating and customs handling are quoted with the instrument.

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Last updated 29 October 2026