sampleprep freezer mills
SPEX SamplePrep Freezer/Mill 115V/60HZ Fisher Scientific. Recognized as the world''s most effective laboratory mills, SPEX SamplePrep''s Freezer/Mills™ are cryogenic laboratory mills that chill samples in liquid nitrogen then pulverizes them with a magnetically driven impactor The 6875 Freezer/Mill is a larger cryogenic grinder with a selfcontained liquid nitrogen tub and insulated case