Product Overview

The REMI RQ-121/D Laboratory Stirrer is a compact and powerful direct-drive laboratory stirrer designed for routine mixing, sample preparation, research and development, quality-control analysis, and general laboratory applications.

It is equipped with a Permanent Magnet DC (PMDC) motor, a digital speed indicator, and an electronic speed regulator for convenient and consistent speed control. The unit is designed particularly for aqueous and low-viscosity liquids such as water and light oils, with a maximum stirring capacity of up to 10 litres.

The RQ-121/D uses an SS 316 stirring shaft and axial turbine impeller, providing effective circulation and uniform mixing of liquids. Its direct-drive configuration makes it suitable for everyday laboratory stirring requirements where dependable and controlled mixing is required.

Key Features

• Direct-drive laboratory stirrer
• PMDC motor for reliable laboratory operation
• Stirring capacity up to 10 litres
• Variable speed range of 200–2000 RPM
• Digital RPM indicator for monitoring stirring speed
• Electronic speed regulation
• SS 316 stirring shaft
• Axial turbine impeller
• 250 mm stirring shaft length
• 36 mm impeller diameter
• Suitable for water and light oils
• Designed for routine laboratory use
• Suitable for continuous laboratory operations
• Compact and practical design
• Suitable for research, QC and sample-preparation applications

Technical Specifications

The core shaft, impeller, motor, speed and capacity specifications are listed in REMI's laboratory-stirrer catalogue.

*A current retail listing gives approximately 10 kg for the RQ-121/D.

Motor & Drive System

The RQ-121/D uses a Permanent Magnet DC (PMDC) motor with direct-drive transmission. This configuration is intended for reliable day-to-day laboratory stirring and provides a broad speed range of 200 to 2000 RPM.

The direct-drive design eliminates the need for a conventional belt-driven transmission, providing a straightforward mechanical arrangement for laboratory mixing.

Digital Speed Display

The built-in digital speed indicator allows the operator to monitor the actual/set stirring speed during operation. This is particularly useful in applications where reproducibility of mixing conditions is important.

The electronic speed regulator provides stepless speed adjustment, allowing the operator to select an appropriate RPM according to the sample and mixing requirement.

Stirring Shaft & Impeller

The RQ-121/D is supplied with a 250 mm long SS 316 stirring shaft and an axial turbine impeller with a 36 mm diameter. The stainless-steel construction provides suitability for a wide range of routine laboratory mixing applications.

The axial turbine impeller is designed to promote liquid circulation, making it suitable for mixing aqueous solutions and other low-viscosity liquids.

Applications

The REMI RQ-121/D can be used across a wide range of laboratory and industrial applications.

Pharmaceutical Laboratories

Suitable for:

• Solution preparation
• Reagent mixing
• Buffer preparation
• Sample preparation
• Routine formulation work

Chemical Laboratories

Useful for:

• Chemical solution preparation
• Mixing aqueous solutions
• Reagent preparation
• Laboratory-scale process development

Research & Development

The variable speed control and digital RPM indication make the RQ-121/D suitable for research experiments where controlled and reproducible mixing is required.

Quality Control Laboratories

Suitable for routine sample conditioning, solution preparation and controlled laboratory mixing.

Water & Environmental Laboratories

The stirrer can be used for mixing water-based solutions and samples where controlled mechanical stirring is required.

Educational Laboratories

Its straightforward operation makes it suitable for colleges, universities and teaching laboratories for practical experiments involving liquid mixing.

Suitable Materials

The RQ-121/D is primarily intended for water and light-oil applications and other relatively low-viscosity liquids. REMI's catalogue specifies a maximum stirring volume of 10 litres for these fluid types.

Product Benefits

High Stirring Capacity

The RQ-121/D can handle up to 10 litres, making it suitable for laboratory-scale mixing beyond small-volume magnetic stirring applications.

Wide Speed Range

With a range of 200–2000 RPM, the unit provides flexibility for different mixing requirements.

Digital Speed Monitoring

The digital RPM indicator allows the operator to monitor the stirring speed conveniently and supports repeatable laboratory procedures.

Durable Stainless-Steel Components

The SS 316 stirring shaft is designed for routine laboratory use and compatibility with a variety of aqueous and low-viscosity laboratory solutions.

Direct-Drive Design

The direct-drive mechanism provides a straightforward and efficient arrangement for routine laboratory stirring.

Product Specifications at a Glance

Brand: REMI
Model: RQ-121/D
Product: Laboratory Stirrer
Type: Direct Drive Stirrer
Motor: PMDC
Capacity: Up to 10 L
Speed: 200–2000 RPM
Speed Display: Digital
Shaft: SS 316
Shaft Length: 250 mm
Shaft Diameter: 8 mm
Impeller: Axial Turbine
Impeller Diameter: 36 mm
Suitable Fluids: Water / Light Oil
Power Supply: 220–240 V, 50 Hz
Approx. Weight: 10 kg