2.0 SPECIFICATIONS
Type of mill: cryogenic impact mill
Grinding mechanism: steel impactor driven by dual electromagnets
Coolant: liquid nitrogen
Weight (empty, without vial or coolant): approx. 12 lbs. (5.4 Kg)
Grinding Vials: one 6751, 6751/52, or 6753 vial. (6753 Vial contains 3 microvials.)
Typical Sample Capacity:
6751 - 6751/52 Vial: actual volume with impactor, approx. 25 ml. Typical sample
weights: 2 grams for biological samples, 1 gram for polymers. The maximum capacity
for easily ground samples of moderate density is approx. 8 grams.
6753 Vial: 100 - 500 mg per micro-vial, depending on sample
Note: actual capacity for a given sample may be smaller or larger, depending on
sample properties such as physical form, density, flexibility, etc.
Typical liquid nitrogen consumption:
4-5 liters are required for initial cool-down and filling of the tub.
3-6 liters for each hour of operation.
Electrical specifications: CE Approved, available in 115V 60HZ or 230V 50HZ.
Cord: 115V 60HZ version, 3-prong grounded plug supplied.
230V 50HZ version, 2-prong European plug supplied.
NOTE: Operator is responsible for supplying alternate line cord/plug if required.
Fuses: Two 8-amp slow-blow fuses in AC Input module for 115V,
Two 5-amp slow-blow fuses in AC Input module for 230V,
25-amp slow-blow fuse on circuit board in lid.
Dimensions: 12 in. (30 cm) x 12 ½ in. (32 cm) x 9 in. (23 cm)
CE Compliance and Certification: The 6750 Freezer/Mill has been tested for compliance with CE
Directives for Industrial, Scientific, and Medical Equipment Emission, and Generic Light Industrial
Immunity.
Safety Features:
Lid Interlock prevents mill from running if lid is not latched shut.
Liquid nitrogen sensor shuts down mill if liquid nitrogen level is too low.
NOTE: The sensor can shut down the mill during a run, so the nitrogen level should be
visually checked during extended runs as well as before every run. The Freezer/Mill warranty
does not cover damage to the coil caused by operating the mill with little or no liquid nitrogen.
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