Cryogenic Grinding Mill

Retsch - CryoMill

Material feed size: ≤ 8 mm
Final fineness: ~ 5 µm
3 different grinding modes - cryogenic, dry or wet at ambient temperature

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Description
Specifications

The CryoMill is tailored for cryogenic grinding

The grinding jar is continually cooled with liquid nitrogen from the integrated cooling system before and during the grinding process.

Thus the sample is embrittled and volatile components are preserved. The liquid nitrogen circulates through the system and is continually replenished from an Autofill system in the exact amount which is required to keep the temperature at -196 °C.

Powerful impact ball milling results in perfect grinding efficiency. The Autofill system avoids direct contact with LN2 and makes cryogenic grinding very safe. Its versatility (cryogenic, wet, and dry grinding at room temperature) makes the CryoMill the ideal grinder for quantities up to 20 ml.

Application Examples

animal feed, bones, chemical products, food, hair, oil seeds, paper, plant materials, plastics, sewage sludge, soils, tablets, textiles, tissue, waste samples, wood, wool...

Product Advantages

powerful cryogenic grinding by impact and friction, up to 30 Hz
3 different grinding modes (cryogenic, dry or wet at ambient temperature)
closed LN2-system (autofill) for enhanced safety, avoids any contact of the user with LN2
screw-top grinding jars for convenient, leak-proof operation
wide range of accessories including various LN2 feeding systems, jar and ball sizes, adapter racks, materials
low LN2-consumption
clearly structured user interface, memory for 9 SOPs
programmable cooling and grinding cycles (10 s to 99 min)
ceramic jar available

Function Principle

The grinding jar of the CryoMill performs radial oscillations in a horizontal position. The inertia of the grinding balls causes them to impact with high energy on the sample material at the rounded ends of the grinding jar and pulverize it. The grinding jar is continually cooled with liquid nitrogen from the integrated cooling system before and during the grinding process.

Applications	size reduction, mixing, homogenization, cell disruption
Field of application	agriculture, biology, chemistry / plastics, construction materials, engineering / electronics, environment / recycling, food, geology / metallurgy, glass / ceramics, medicine / pharmaceuticals
Feed material	hard, medium-hard, soft, brittle, elastic, fibrous
Size reduction principle	impact, friction
Material feed size*	≤ 8 mm
Final fineness*	~ 5 µm
Batch size / feed quantity*	max. 20 ml
No. of grinding stations	1
Setting of vibrational frequency	digital, 5 - 30 Hz (300 - 1800 min^-1)
Typical mean grinding time	10 min / 4 min (cooling / grinding)
Dry grinding	yes
Wet grinding	yes
Cryogenic grinding	yes
Cell disruption with reaction vials	yes
Self-centering clamping device	yes
Type of grinding jars	screw top design
Material of grinding tools	hardened steel, stainless steel, zirconium oxide, PTFE
Grinding jar sizes	5 ml / 10ml / 25 ml / 35 ml / 50 ml
Autofill	50 l
Setting of grinding time	digital, 30 s - 99 min
Storable SOPs	9
Electrical supply data	100-240 V, 50/60 Hz
Power connection	1-phase
Protection code	IP 30
Power consumption	260 W
W x H x D closed	395 x 373 x 577 mm (D: 710 mm with exhaust tube)
Net weight	~ 45 kg
Standards	CE