The JFC series of cryogenic sample crushers consist of a cell, a tungsten carbide steel ball. The sample and the steel ball are placed inside the cell which is attached to a crush rod and the rod is attached to the main unit. The cell is immersed in liquid nitrogen to cool the sample and the steel ball. Then the crush rod is set in motion by reciprocating up and down and causes the steel ball inside the cell to pound the sample into a fine powder.

♦All polymers, i.e. plastic and rubber, can be
  crushed after cooling in liquid nitrogen.
♦Ideally suited for analysis of polymer additive, for
  analysis of outgas from polymers and for pretreating
  samples, i.e. wood chips, natural products or
  biological samples.
♦The cell can be of stainless steel (standard) or
  titanium.
♦High resolution NMR spectrum can be obtained
  after pulverization.
♦When vulcanized rubber is crushed with KBr, IR
  measurement can easily be made from the KBr
  disk.