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RETSCH Knife Mill Grindomix GM300

For size reduction, homogenization and mixing

Supplier:  RETSCH 202520001

Catalog No. 08-418-325

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Instrument for the grinding and homogenization of food stuffs. It allows to process sample volumes up to 4.5L quickly and reproducibly.

  • Four sharp, robust blades and powerful motor which can reach temporary peaks of 3kW
  • Homogenizes substances with high water, oil or fat content as well as for grinding dry, soft and medium-hard products
  • Meets and exceeds all special laboratory and analytical requirements and is a professional device superior to any commercial household mixer
  • Efficient size reduction of up to 4,500mL feed quantity due to a powerful 1.1 kW motor (peak power input >3 kW)
  • Pre- and fine-grinding in one mill: cutting action in regular mode, grinding by impact in reverse mode, pre-grinding in interval mode
  • All parts which come into contact with the sample material are autoclavable
  • Perfect adaptation to application requirements by variable speed from 500 to 4000 min-1 with an increment of 100 min-1
  • Optional gravitation lid for automatic reduction of the grinding chamber volume (Cat. Nos. 08-418-330, -331 and -332)
  • Ten SOPs can be stored
  • Grinding jar in plastic and stainless steel available (Cat. Nos. 08-418-326, -327 and -329)
  • Feed material: soft, medium-hard, elastic, containing water/fat/oil, dry, fibrous
  • Size reduction principle: cutting
  • Material feed size†: ã130mm
  • Final fineness†: <300μm
  • Batch size/feed quantity†: 4500mL (w/ standard lid); 4000mL (gravity lid)
  • Grinding chamber volume: 5000mL, reduction with gravity lid
  • Speed setting: digital, 500-4000 min-1
  • Setting of grinding time: digital, 5 sec. to 3 min.
  • Interval operation: yes
  • Interval time: adjustable
  • Storable SOPs: 10
  • Drive: 3-phase asynchronous motor with frequency converter
  • Drive power: continuously 1.1 kW, short term 3 kW
  • Power connection: 1-phase
  • Protection code: IP 20
  • D x W x H (closed): 440 x 440 x 340mm
  • Net weight: ã30kg


Agriculture, biology, food, medicine/pharmaceuticals. Examples: candy, cereal bars, cereals, cheese, coated tablets, cocoa nibs, deep-frozen products, dietary supplements, dried and fresh fruit, feed pellets, fish, ham, lettuce, meat, nuts, oil seeds, pharmaceutical materials, plant materials, sausages, soap, spices, vegetables.



Knife Mill
169 oz.
44 cm
Ideal for agriculture, biology, food, medicine, pharmaceuticals, size reduction, homogenization and mixing
13.38 in.
50/60 Hz
<300 μm
4500 mL
22/230 V
66.13 lb.
17.32 in.
5000 mL
17.32 in.
22/230V 50/60 Hz
5 sec. to 3 min.
34 cm
152.16 oz.
500 to 4000 min.-1
1100 W
30 kg
44 cm


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