If you are looking for a versatile, sturdy and safe immersion blender for your laboratory, the Heidolph RZR 1 immersion blender is an excellent choice, especially if you are considering purchasing a used machine. This model is particularly appreciated in the pharmaceutical, chemical, cosmetic and food for its reliability and high performance, even in continuous working conditions.

What it looks like visually

The Heidolph RZR 1 stands out for its compact and functional design. Aesthetically understated, yet solid, the camera body is generally in a metallic gray finish, with intuitive controls on the front panel. It is equipped with a vertical structure that houses the stirring rod, while the motor is enclosed in a robust casing that guarantees protection from possible overheating or overloads. This is a compact, yet powerful rod stirrer that is easy to install on any laboratory bench.

Main components and measurements

The Heidolph RZR 1 mixer consists of:

• Powerful and reliable motor : designed to withstand continuous use.
• Adjustable stirring rod : supports different types of stirrers, adapting to various samples and viscosities.
• Simple and precise controls : the front panel allows easy speed adjustment, with a wide range for diversified applications.

The dimensions of the mixer are compact, with a height of approximately 500 mm , ideal for placing on laboratory tables without taking up too much space. The weight, approximately 5 kg , makes it stable but easily movable.

Mechanical characteristics and use

One of the standout features of the Heidolph RZR 1 is adjustable speed , which allows for broad versatility in applications. With a speed range of 280 to 2200 revolutions per minute (rpm) for the main attachment and 35 to 250 rpm with the perpendicular attachment, this mixer is ideal for samples with variable viscosity. This feature makes it perfect for use in multiple applications, both for low viscosity preparations and for denser samples.

The 77 W motor , powered by 230 V and 50 Hz , is powerful enough to handle large sample volumes, up to 20 liters , without overheating. This allows you to work continuously, ensuring smooth and reliable operation even under heavy load conditions.

Usage procedure

Using the Heidolph RZR 1 is intuitive and quick. Once the stirrer has been fixed to the workbench using a support bracket, the stirring rod can be inserted into the sample. The control panel allows you to select the desired speed based on your specific sample needs. Thanks to the electronic speed control, the operator can gradually adjust the parameters until the optimal configuration is reached to obtain uniform agitation.

Matching accessories

One of the strengths of the Heidolph RZR 1 is its compatibility with a wide range of accessories . It is possible to combine different stirring rods depending on the type of sample to be processed. Furthermore, there are adjustable supports and fixing plates, ideal for ensuring stability and safety during use.

Mathematical formulas for optimal use

To get the most out of the mixer, it is important to consider the stirring speed in relation to the sample viscosity and volume. For example, you can use the following formula to determine the correct number of revolutions per minute (rpm):

{ Volume  Viscosity \times Coefficient\ of\ Resistance} r p m = Viscos i t a ˋ × C oe ff i c i e n t of R  es i s t e n c e V o l u m e

This allows you to optimize mixing without overloading the motor.

Maintenance

To ensure long-lasting operation, regular maintenance of your Heidolph RZR 1 . After each use, it is advisable to carefully clean the stirring rod and the machine body to avoid the accumulation of residues which could compromise the efficiency of the device. Furthermore, it is important to periodically check the condition of the engine and ensure that the cooling fans are free from obstructions.

Safety and compliance regulations

Heidolph RZR 1 mixer complies with the main safety standards for laboratory machinery, even if used. If there are no specific indications of CE , it is possible to adapt the machinery to current regulations by installing additional safety devices, such as automatic shutdown switches in case of overheating or overload.

How to evaluate a good used one

When considering purchasing a used Heidolph RZR 1 , it is essential to check:

• Engine condition : must operate without abnormal noises or excessive vibrations.
• Condition of the rods and accessories : check that they are intact and show no signs of excessive wear.
• Control system : Make sure that the speed is precisely adjustable and that the mixer reaches the intended speed without difficulty.

Sectors of use

The Heidolph RZR 1 immersion mixer is used in several industries, thanks to its ability to handle various types of samples and applications:

• Pharmaceutical industry : preparation of solutions and mixing of compounds.
• Chemical industry : synthesis and agitation processes of reagents.
• Cosmetic industry : preparation of creams and lotions.
• Food industry : mixing of liquid and semi-solid solutions.

Why buy used?

Buying a used Heidolph RZR 1 represents an excellent investment for those looking for a reliable machine at a low cost. This model, even after years of use, maintains high performance and requires minimal maintenance. Choosing a well-maintained used one allows you to save money without sacrificing quality, making it a convenient solution for laboratories of all sizes.