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Carbon dioxide slush (solidified carbon dioxide-acetone-sulfur mixture) has many uses in dermatology. The preparation of this material is time-consuming and tedious. The difficulty in preparing the slush lies in breaking up the carbon dioxide slabs into a fine powder. Rather than pulverize this material by hand, we have been using an ordinary kitchen meat grinder (Universal No. 1). The slabs of solidified carbon dioxide are cracked into small pieces (4 to 5 cm. in size), which are placed in the meat grinder and pulverized in the usual manner.
There are two advantages to this method. The material is of uniform size and the time of the pulverizing procedure is greatly reduced. After the solidified carbon dioxide is powdered, it can then quickly be made into slush in the usual method. We use a mortar and pestle, adding sulfur powder and acetone to reach the correct consistency as desired.
COOPER GA, STOOPS CW. PREPARATION OF SLUSH. AMA Arch Derm Syphilol. 1951;64(5):641. doi:10.1001/archderm.1951.01570110111020
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