Promotional price valid on web orders only. Your contract pricing may differ. Interested in signing up for a dedicated account number?
Learn More


Specially designed for the processing of foods and feeds for subsequent NIR analysis.

Supplier:  RETSCH 20.831.0002

Catalog No. 08-418-550

Add to Cart



The optimized form of rotor and grinding chamber generates an air jet which carries the ground sample through the integrated cyclone into the sample bottle. The air jet prevents the material from heating up, thus preserving the moisture content.
The provided sieves guarantee an optimum particle size distribution so that it is not necessary to recalibrate the NIR spectrometer. The rotor speed can be adjusted in 3 steps allowing for perfect adaptation to the sample requirements. Cleaning the mill is quick and easy as the air jet effects a complete discharge of the material from the grinding chamber.
This new cyclone mill with proven Retsch quality optimizes the reproducible sample preparation for NIR analysis, allowing for meaningful and reliable analysis results.
Product Advantages

  • Ideal for grinding feeds, grains, forage and other similar products
  • 3 controlled speeds
  • Cyclone separator with 250ml collecting bottle for quick extraction of sample
  • No cross contamination thanks to easy cleaning
  • Convenient operating panel
  • Robust industrial motor 900W with long lifetime
Function Principle
In the cyclone mill TWISTER size reduction is effected by impact and friction between the rotor and the friction surface of the fixed grinding ring. The feed material passes through the hopper (with splash-back protection) onto the rotor which is rotating with high speed and is thus subjected to preliminary size reduction. The sample is then thrown outwards by centrifugal acceleration and is pulverized between rotor and grinding ring. The 2-step grinding ensures particularly gentle but fast processing. The feed material only remains in the grinding chamber for a very short time. The integrated cyclone provides cooling of the sample and the grinding tools. This guarantees preservation of the sample properties to be determined. The ground material is separated in the cyclone and collected in a sample bottle.


Grinding prior to NIR analysis



8.45 oz.
28.3 cm
9.85 cm
Ideal for agriculture, foods, feeds, medicine, pharmaceuticals, grinding prior to NIR analysis
42.69 cm
<500 μm
100/120 V
30.86 lb.
17.67 in.
250 mL
11.14 in.
3.87 in.
100/120 V, 50/60 Hz
16.81 in.
50/60 Hz
10,000/12,000/14000 min.-1
900 W
14 kg
44.9 cm


Product Certifications


Provide Content Correction

We continue to work to improve your shopping experience and your feedback regarding this content is very important to us. Please use the form below to provide feedback related to the content on this product.

Product Title

By clicking Submit, you acknowledge that you may be contacted by Fisher Scientific in regards to the feedback you have provided in this form. We will not share your information for any other purposes. All contact information provided shall also be maintained in accordance with our Privacy Policy.

Cancel Submit