RETSCH / CYCLONE MILL

TWISTER.
Food and feed. Prepared for NIR.

Purpose-built preparation of suitable soft and fibrous food or feed samples before near-infrared analysis. The integrated cyclone moves ground material into a bottle while the airflow helps limit heating and preserve sample moisture.

Discuss TWISTER Technical data

Configurations and accessories shown may be optional.

FEED SIZE*< 10 mm

FINAL FINENESS*< 250 µm

SPEED10,000 / 12,000 / 14,000 rpm

THE MODEL IN FOCUS

Food, feed and agricultural samples for NIR analysis.

Prepare for NIR

The mill and supplied sieves address food and feed sample preparation. Confirm the grinding method against the actual NIR calibration.

Control airflow and heating

The rotor and chamber create airflow that transports sample through the integrated cyclone, reducing residence time and heat exposure.

Choose three speeds

Select 10,000, 12,000 or 14,000 rpm and the appropriate 1 or 2 mm sieve for the sample.

Recover and clean

Collect in the 250 mL bottle. Air-assisted discharge and chamber access simplify sample changes and cleaning.

*Published feed limits, fineness and throughput depend on the material, sieve, speed and configuration. Sieve aperture is not the final particle size, and maximum throughput and finest output are not simultaneous guarantees.

FUNCTIONAL PRINCIPLE

How TWISTER
works.

Impact and friction act between the rotor and fixed grinding ring. The sample is accelerated outward and ground in two stages, then carried by airflow through the cyclone into the bottle.

Match sample behavior and feed dimensions
Choose the actual sieve, speed and contact materials
Validate the output with a representative trial

TWISTER operating components or configuration example — TWISTER impact, friction and cyclone principle.

PUBLISHED TECHNICAL DATA

The technical
picture.

TWISTER: cyclone mill for fibrous, soft samples.

Published feed limits, fineness and throughput depend on the material, sieve, speed and configuration. Sieve aperture is not the final particle size, and maximum throughput and finest output are not simultaneous guarantees. Confirm current electrical and installation requirements before ordering.

Maximum feed size*: < 10 mm
Final fineness*: < 250 µm
Batch size / feed quantity: < 250 ml
Speed setting: 10,000 / 12,000 / 14,000 min-1
Drive power: 900 W
W x H x D closed: 449 x 427 x 283 mm
Net weight: 14 kg

All other specifications

Applications: grinding prior to NIR analysis
Field of application: agriculture, foods / feeds, medicine / pharmaceuticals
Feed material: fibrous, soft
Size reduction principle: impact, friction
Rotor peripheral speed: 52 / 62 / 72 m/s
Rotor diameter: 98.5 mm
Sieve sizes: 1 mm / 2 mm
Drive: series-characteristic motor
Electrical supply data: different voltages
Power connection: 1-phase
Standards: CE

CONFIGURE THE WORKFLOW

The options shape
the result.

Sieves & collection

The published sieve sizes are 1 and 2 mm and the collection bottle is 250 mL. Feed quantity is specified below 250 mL. Sieve opening and achieved particle size are different specifications.

NIR method transfer

Consistent preparation supports reproducible analysis, but confirm the effect of a new preparation method on the spectrometer calibration, moisture and analytical result.

Application boundaries

Prioritize soft or fibrous food and feed samples below 10 mm. Larger feed, hard minerals or production-throughput targets need a different preparation route or a specialist review.

TYPICAL MATERIALS

Start with your sample.

Examples guide the discussion; they do not guarantee a result for every material or formulation.

Cereals
Corn & rice
Feed pellets
Forage
Soy
Pasta & tobacco

Explore materials & applications

MODEL APPLICATION REVIEW

Put TWISTER
to the material test.

Share the starting size, desired fineness and quantity to process. We’ll review the milling route, tools, collection and opportunities for a material trial.