Terra Part # 6926-01
$1,597
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Maximum Speed: 28000 rpm

Feed Hardness: 6 mohs

Cooling Method: Dry Ice/Liquid Nitrogen

Electrical Specifications: 120 V, 50/60 Hz

Motor Output: 100W

• Material beater/cutter: stainless steel 1.4034

• Material milling chamber: stainless steel 1.4571

• Process type: batch

• Operating principle: cutting/impact

• Motor rating input/output: 160 W/100 W

• Circumferential speed max.: 53 m/s

• Usable volume max.: 80 ml

• Power-on time ON/OFF: 1 min/10 mins

• Permissible ambient temperature: 5 - 40°C

• Permissible relative humidity: 80%

• Protection class according to DIN EN 60529: IP 43

• Impact grinding of hard or non-elastic grinding materials with high grade stainless steel beater

• Pulverizes moist and gluey materials by adding water

• Double-walled grinding chamber for durability

• High-grade steel chamber withstands down to -200 °C for use with liquid nitrogen

• Mill feed can be cooled in milling chamber with dry ice or liquid nitrogen

• Optional 250 ml grinding chamber for increased volume

Grinding Procedure: Impact/Cutting

Feed Hardness: 6 mohs

Electrical Specifications: 120 V, 50/60 Hz

Motor Output: 100W

Maximum Speed: 28000 rpm

Cooling Method: Dry Ice/Liquid Nitrogen

Weight, Product: 3.3 lb

Weight, Shipping: 4 lb

Dimensions, Product: 3.35" W x 3.35" D x 9.45" H

Dimensions, Shipping: 6" W x 6" D x 12" H

Package Type: Box

Unit of Measure: EA

Features and Benefits

Accessories and Grinding Procedures

Available Accessories for A 11 basic Analytical Mill

Grinding heads for the MF 10 Microfine Grinder Drive are easily interchangeable and are designed for crushing fibrous substances (MF 10.1) or brittle, hard materials with a Mohs hardness of 6 (MF 10.2).

To ensure maximum particle size filtering, materials being processed are passed through a sieve prior to being discharged. Materials can then be collected using an NS 29 standard ground vessel. Sieves (sold separately) are available in sizes from 0.25 mm to 4.0 mm.
Grinding Procedures of A 11 basic Analytical mill


Impact Milling
  • Grinds materials with hardness greater than 4 Mohs when used with A 11.3 beater
  • Beating rotor reduces grinding material (must be reduced to 1 cm (feed granularity 10 mm—size of grain of corn ideal)
  • Breaks up hard, brittle grinding material, dried material or material brittle from cold
  • Granularity of final product determined by duration of grinding, amount of product and physical properties of material
  • Types of materials processed: Grain, barley, corn, malt, pectin, roasted coffee, bark, roots, nutshells, bones, ergot, compressed materials, peat, cellulose, pharmaceutical, artificial, fertilizers, feed materials, spices, resin, potash, seeds, salts, slag
  • Tough grinding material must be cooled with dry ice adding to grinding container
Cutting Milling
  • Reduces bulk, elastic fibrous and soft materials with high cellulose content when used with A 11.2 cutting blade
  • Rotating blade cuts grinding material
  • Introduces less heat into grinding material
  • Granularity of final product determined by duration of grinding, amount of product and physical properties of material
  • Types of materials processed: Leaves, fibers, spices, grain, hops, cardboard, paper, hay, plastics, tobacco, peat, feed goods, dough and roots (feed granularity should be no greater than 10 mm)
  • Added water should not be filled to more than 50% capacity
Cooling Processes for A 11 basic Analytical Mill
Dry ice cooling (CO2): approx. –78 °C
  • Do not use A 11.4 grinding beaker (250 ml made of polycarbonate); beaker will break during cooling process
  • Add dry ice after putting feed product into grinding beaker
  • Prevent high pressure from building up in grinding chamber by waiting until dry ice is completely vaporized before attaching the drive
Liquid nitrogen cooling (N2): approx. –196 °C
  • Use beater (A 11.1 or A 11.3)
  • Do not use A 11.2 (blade becomes blunt quickly)
  • Pour feed product into grinding beaker then pour liquid nitrogen with use of suitable Dewar vessel to ensure sample is completely submerged or covered
  • Prevent high pressure from building up in grinding chamber by waiting until liquid nitrogen is completely vaporized before attaching the drive
  • Use filling funnel A 11.7 to pour in liquid nitrogen

Popular Accessories

For a full list of accessories, select a product then click Choose Accessories on that product page.
  • A 11.2 Cutting Blade for IKA A 11 basic Analytical Mill
    Stainless steel A 11.2 Cutting Blade pulverizes and reduces bulky, elastic fibrous and soft materials with high cellulose content; compatible with A 11 basic Analytical Mill.
  • A 11.6 Double beater for IKA A 11 basic Analytical Mill
    Titanium, surface-hardened A 11.6 Double Beater for Mohs 3 hardness required with A 11.4 Polycarbonate Grinding Chamber (250 ml); compatible with A 11 basic Analytical Mill.
  • A 11.4 Polycarbonate Grinding chamber (250 ml)
    Compatible with A 11 basic Analytical Mill, the A 11.4 Polycarbonate Grinding Chamber requires A 11.6 Double Beater for operation; chamber closes airtight for minimal loss of ground material (not for use with liquid nitrogen).

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