Guidelines for Cryogenic Grinding of Bone In SPEX SamplePrep Freezer/MillsTM Success in Freezer/Mill cryogrinding depends on two main things: • The sample must be cold enough to be brittle. • The impactor must be able to move freely back and forth. SPEX6770 全自動冷凍研磨機 SPEX6870 全自動冷凍研磨機 SPEX6970EFM 冷凍研磨機