Cyclone mill for Nir analysis sample preparation

Ensure accurate NIR analysis by optimally preparing samples with efficient grinding and cooling, preserving their integrity and moisture content for reliable results.

Grinds and Coolly Separates Samples for NIR Analysis

The Cyclone Mill TWISTER from Retsch GmbH offers precise sample preparation specifically designed to meet the stringent requirements of near-infrared (NIR) analysis. Utilizing a combination of impact and friction, this rotor mill swiftly grinds, cools, and separates materials such as grains, feeds, and pharmaceuticals, preserving the essential qualities required for accurate analysis. With a robust 900 W motor and adjustable rotor speeds of up to 14,000 min⁻¹, it efficiently handles batch operations, accommodating a feed size of up to 10 mm and achieving a final fineness less than 250 µm. The integrated cyclone ensures samples remain cool, maintaining integrity and moisture content, while the easy-to-clean design eliminates cross-contamination risk and facilitates fast process cycles. Ideal for food processing and pharmaceutical industries, the TWISTER provides reliable results with minimal downtime, engineered to support both high-speed laboratory and pre-processing operations.

Benefits

  • Ensures accurate NIR analysis by maintaining sample integrity and moisture content.
  • Reduces cleaning time and contamination risk with easy-to-clean design.
  • Adapts to diverse sample requirements with adjustable rotor speeds.
  • Supports high-speed sample preparation for efficient productivity.
  • Preserves product quality with integrated sample cooling during grinding.

General


Applications
Soy,Feeds,Medicine,Pasta,Tobacco,Cereals,Feed pellets,Foods,Forage,Corn,Pharmaceutical products,Agriculture,Rice,Pharmaceuticals
End products
Muesli base flakes,Protein pasta,Ground tobacco,Cornflakes,Pharmaceutical tablets,Forage supplements,Granola,Rice flour,Animal feed pellets,Soy protein isolate,Herbal medicines
Steps before
Grinding,Purification,Drying
Steps after
NIR Analysis,Packing,Sterilization
Input ingredients
cereals,corn,feed pellets,forage,pasta,pharmaceutical products,rice,soy,tobacco,fibrous materials,soft materials
Output ingredients
ground sample,particle size < 250 µm,sample for NIR analysis
Market info
Retsch is renowned for manufacturing high-quality laboratory equipment, specializing in milling, sieving, and assisting technologies for sample preparation and characterization, known for precision, reliability, and innovation in the scientific and industrial laboratory markets.

Technical Specifications


Rotor speed
10,000 / 12,000 / 14,000 min-1
Rotor peripheral speed
52 / 62 / 72 m/s
Rotor diameter
98.5 mm
Feed material size
< 10 mm
Final fineness
< 250 µm
Batch size / feed quantity
< 250 ml
Sieve sizes
1 mm / 2 mm
Drive power
900 W
Power connection
1-phase
Dimensions (W x H x D)
449 x 427 x 283 mm
Net weight
14 kg
Standards
CE

Operating Characteristics


Working mechanism
Impact and friction
Integrated steps
2-step grinding
Batch vs. continuous operation
Batch
Cleaning method
Quick and easy cleaning
Automation level
Manual adjustments via operating panel

Material Compatibility


Fibrous compatibility
Yes
Soft material compatibility
Yes
Moisture preservation
Yes

Product type Characteristics


Particle size distribution
Optimized for NIR


CE marking
Yes

Physical Characteristics


Machine footprint
449 x 427 x 283 mm
Net weight
14 kg
Discharge method
Cyclone separator with a 250 ml collecting bottle
Control panel type
Convenient operating panel

Custom Options


Control panel type
Convenient operating panel
Rotor speed adjustment
3 controlled speeds
Sieve sizes
1 mm / 2 mm
Rotor diameter
98.5 mm