Food Laboratory Testing

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    The new knife mill GRINDOMIX GM 300 is the ideal instrument for the grinding and homogenization of foodstuffs. It allows to process sample volumes up to 4.5 liters quickly with reproducibly.

    With four sharp, robust blades and a powerful motor which can reach temporary peaks of 3 kW, it is ideal for homogenizing substances with a high water, oil or fat content as well as for grinding dry, soft and medium-hard products. The GRINDOMIX GM 300 meets and exceeds all special laboratory and analytical requirements and is a professional device superior to any commercial household mixer.

    Application Examples

    Candy, Cereals, Cereal Bars, Cheese, Cocoa Nibs, Coated Tablets, Deep-Frozen Products, Dietary Supplements, Dried and Fresh Fruit, Feed Pellets, Fish, Ham, Lettuce, Nuts, Meat…

    Product Advantages

    • Efficient size reduction of up to 4,500 ml 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
    • 10 SOPs can be stored
    • Grinding jar in plastic and stainless steel available

    Function Principle

    Four sharp, robust blades rotate in the center of the grinding container. Depending on the rotational direction, size reduction is effected with the blunt side (preliminary size reduction) or the sharp side (fine grinding). The knifes are protected with a counterblade from damages by hard sample materials.

    The knife is indirectly driven by a powerful motor of 1,1 kW which can reach temporary peaks of 3 kW. A pre-selectable speed which is maintained electronically ensures reproducible grinding results.

    Applications: Size Reduction, Homogenization and Mixing
    Field of Application: Agriculture, Biology, Food, Medicine / Pharmaceuticals
    Feed Material: Soft, Medium-Hard, Elastic, Containing Water/ Fat / Oil, Dry, Fibrous
    Size Reduction Principle: Cutting
    Material Feed Size: ~ 130 mm
    Final Fineness: < 300 µm
    Batch Size / Feed Quantity: With standard lid 4500 ml // With gravity lid 4000 ml
    Grinding Chamber Volume: 5000 ml, reduction with gravity lid
    Speed Setting: Digital, 500 – 4000 min-1
    Dry Grinding: Yes
    Wet Grinding: Yes
    Material of Grinding Tools: Grinding Container: Autoclavable Plastic PC, Stainless Steel 1.4435// Blade: stainless steel 1.4034 // Holder for blade: PVDF // Sealings: EPDM, FKM
    Setting of Grinding Time: Digital, 5 s – 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
    Electrical Supply Data: Different voltages
    Power Connection: 1-Phase
    Protection Code: IP 20
    W x H x D Closed: 440 mm x 340 mm x 440 mm
    Net Weight: ~ 30 kg
    Standards: CE

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  • The cyclone mill TWISTER is specially designed for the processing of foods and feeds for subsequent NIR analysis. 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 in proven quality optimizes the reproducible sample preparation to NIR analysis thus allowing for meaningful and reliable analysis results.

    Application Examples

    Cereals, Corn, Feed Pellets, Forage, Pasta, Pharmaceutical Products, Soy, Rice, Tobacco, …

    Product Advantages

    • Ideal for grinding feeds, grains, forage and other similar products
    • 3 controlled speeds
    • Cyclone separator with 250 ml collecting bottle for quick extraction of sample
    • No cross contamination thanks to easy cleaning
    • Convenient operating panel
    • Robust industrial motor 900 W with long lifetime

    Function Principal

    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 submitted 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.


    Applications: grinding prior to NIR analysis
    Field of application: agriculture, foods / feeds, medicine / pharmaceuticals
    Feed material: fibrous, soft
    Size reduction principle: impact, friction
    Material feed size* < 10 mm
    Final fineness*: < 250 µm
    Batch size / feed quantity*: < 250 ml
    Speed setting: 10,000 / 12,000 / 14,000 min-1
    Rotor peripheral speed: 52 / 62 / 72 m/s
    Rotor diameter: 98.5 mm
    Sieve sizes: 1 mm / 2 mm
    Drive: series-characteristic motor
    Drive power: 900 W
    Electrical supply data: different voltages
    Power connection: 1-phase
    W x H x D closed: 449 x 427 x 283 mm
    Net weight: 14 kg
    Standards: CE

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