Fritsch Knife Mill

Fritsch Knife Mill: Precision, Power, and Versatility for Your Lab

The Fritsch Knife Mill is engineered for superior sample preparation, offering rapid, quiet, and precise milling and mixing. This robust laboratory mill is an essential tool for any research or quality control setting, handling a diverse range of materials with unparalleled efficiency.

Unmatched Versatility for Diverse Samples: Equipped with four high-performance blades, the Fritsch Knife Mill effortlessly processes a wide spectrum of materials in mere seconds. From moist and oily substances to fatty, dry, soft, medium-hard, and fibrous samples, its powerful motor and specialized design ensure consistent results. The grinding vessel's unique "interfering contour" walls actively direct sample material back towards the center, guaranteeing thorough mixing and preventing caking. This innovative design results in highly homogeneous samples with a consistently narrow particle size distribution, crucial for accurate analysis.

Powerful Performance and Rapid Processing: Experience exceptional grinding power with a motor capable of up to 1,250 Watts. The specially curved knife blades deliver an astounding 56,000 cutting processes per minute, dramatically reducing processing times. On average, most samples achieve their desired fineness within just 30 seconds. The mill can handle feed quantities up to 1,400mL and accommodate maximum feed sizes of 40mm, making it suitable for a broad array of applications where fine grinding (<300µm) is required.

Flexible Operation Modes for Optimized Results: Adapt your milling process with ease using the intuitive control panel. Switch between continuous, interval, or reverse operation modes at the push of a button. The reverse mode is particularly effective for achieving more thorough mixing and preventing material from sticking, all without the need to open the mill. The motor speed is fully variable, adjustable in precise 100rpm increments between 2,000 and 10,000rpm. For particularly stubborn, sticky, or fibrous samples, a turbo function provides a powerful burst of 14,000rpm for up to six seconds, ensuring complete disintegration and homogenization.

Advanced Safety Features for User Protection: Safety is paramount with the Fritsch Knife Mill. The unit incorporates multiple interlocks to protect operators. It will not activate until the grinding vessel and knife are correctly inserted and the safety lock is securely closed. A robust bayonet lock firmly secures the knife, and the protective hood remains locked while the knife is rotating. The integrated control system prevents users from selecting an excessively high rotational speed that could compromise safety or sample integrity. Additionally, an automatic power reduction system activates if the motor temperature becomes too high, safeguarding the unit and ensuring longevity.

Comprehensive Package and Expandable Accessories: Each Fritsch Knife Mill comes complete with a 1.4L grinding vessel, a protective silicone lid, and standard stainless steel knives. All included components are designed for easy cleaning and maintenance. For specialized applications or increased throughput, additional Grinding Vessels and Knives are available in various materials (e.g., tungsten carbide for harder samples, autoclavable plastic for biological applications) and can be purchased separately to meet your specific laboratory needs.

Key Applications:

• Agriculture (grains, feeds, plant tissue)
• Construction materials (cement, aggregates)
• Food (spices, nuts, dried fruits, cereals)
• Animal Feed
• Pharmaceuticals (tablets, active ingredients)
• Plants (leaves, roots, seeds)
• Biological samples (tissue, DNA/RNA extraction prep)
• Environmental Analysis (soil, waste)
• Plastics and Polymers

Core Features:

• Versatile operation: Continuous, Reverse, and Interval modes
• Precision speed control: Variable 2,000–10,000rpm with 100rpm increments
• Powerful Turbo Function: 14,000rpm for sticky/fibrous materials (max 6 sec)
• User-friendly: Easy-to-clean grinding vessel, lid, and knives
• Programmable: Save up to 20 Standard Operating Procedures (SOPs) for reproducibility
• Advanced safety interlocks
• Robust 1,250 Watt motor

Included Items:

• Fritsch Knife Mill Main Unit
• 1.4L Autoclavable Plastic Grinding Vessel
• Autoclavable Silicone Grinding Vessel Lid
• Autoclavable Standard Stainless Steel Knife

Technical Specifications:

• Maximum Feed Particle Size: 40mm
• Sample Capacity: Up to 1,400mL
• Final Fineness: <300µm (material dependent)
• Revolutions per Minute: 2,000–10,000rpm (variable); 14,000rpm (turbo function, max 6 sec)
• Power: 100–120V, 50/60 Hz
• Product Dimensions (WxDxH): 12.6 x 16.9 x 18.9in (320 x 430 x 480mm)