VWR Vortex Stirrer Model Reax Top - Used

If you are looking for a vortex mixer for your laboratory, the VWR Reax Top is an excellent choice, especially if you consider buying it used. This agitator is ideal for those who work in the pharmaceutical, chemical, cosmetic, food, dietary and medical device production sectors. Its versatility and robustness make it an indispensable tool for ensuring optimal sample mixing in various scientific contexts.

General Description and Components

The VWR Reax Top vortex shaker features a heavy, splash-resistant external structure, ideal for daily use in a laboratory environment. The compact design makes it easily positionable on any workbench, while the adjustable circular feet ensure a perfect fit and prevent unwanted movements during operation.

This model is designed to offer fast and effective mixing , activated by simply pressing the sample onto the platform. The external structure not only protects against wear and tear, but also ensures that the instrument is stable during operation. Thanks to its sturdy construction, this shaker stands up to heavy use, making it perfect for laboratories that need durable equipment.

Technical Characteristics

• Manufacturer : VWR
• Model : Reax Top
• Power supply : 100-240 V, 50/60 Hz
• Speed ​​range : From 0 to 2500 rpm
• Dimensions : Compact, perfect for any workbench
• Use temperature range : 5 to 40°C
• Operating Humidity : Up to 85% relative humidity
• Operating modes : Continuous or intermittent manual
• Speed ​​Adjustment : Analog knob for infinite adjustment
• Weight : Heavy structure that ensures stability and safety

Usage Procedure

Using the VWR Reax Top is extremely simple. Stirring begins by pressing the sample onto the holder. This model has two operating modes:

1. Continuous mode , ideal for long-lasting mixing without interruptions.
2. Intermittent manual mode , perfect for direct control of the mixing according to needs.

The analog setting knob allows you to precisely adjust the rotation speed, variable from 0 to 2500 rpm. This allows you to adapt the intensity of the stirring to the type of sample and its delicacy.

Matching accessories

The Reax Top vortex shaker can be used with different types of platforms or stands to accommodate various types of tubes and containers. This makes the instrument extremely versatile and able to satisfy multiple needs within the laboratory.

Optimal Use Parameters

To obtain the best results, it is essential to consider the rotation speed in relation to the type of sample and the volume to be stirred. To calculate the time and energy needed, you can use the following formula:

• Relative centrifugal force (RCF) :
  RCF = 1.118 × 10^-5 × r × (rpm)^2
  Where r is the radius of gyration and rpm is the speed in revolutions per minute.

Workable Materials

Vortexing is commonly used to mix liquids, suspensions and solutions in various containers, such as:

• Eppendorf tubes
• Bottles
• Microtiter plates
• Beakers and laboratory glasses

Thanks to the fine speed adjustment , this model can also be used for delicate materials that require controlled mixing.

Maintenance and Safety

To keep the VWR Reax Top agitator in perfect condition, it is recommended to regularly clean the structure and platform to avoid the accumulation of residues. Periodically check the correct functioning of the fixing feet and the speed adjustment knob. The machine complies with safety standards for laboratory use, but if it is not CE certified, it is possible to readjust it to current regulations with adequate maintenance and technical control.

How to Evaluate If It's a Good Used One

The VWR Reax Top represents an excellent opportunity to save compared to the new one, while still maintaining high performance. When evaluating a used shaker, it is important to consider:

• External conditions : Make sure the structure has no obvious damage.
• Knob operation : Check that the speed adjustment is smooth and free of jams.
• Stability of the feet : Check that the appliance is stable and safe on the workbench.

Sectors of Use

The VWR Reax Top shaker finds application in numerous industrial and scientific sectors, including:

• Pharmaceutical laboratories
• Chemical industry
• Cosmetic laboratories
• Food and dietetic industry
• Production of medical devices

Why It's Better to Buy Used

Buying a used vortex mixer like the VWR Reax Top is a smart solution for reducing costs without sacrificing quality. The used market offers the possibility of obtaining reliable, tested and functional instruments, with considerable economic savings compared to new ones.