This specially designed PYREX® trap is a replacement part for the PYREX® Cyanide Distilling Apparatus (No. 3350-C)
Used in testing for soluble and insoluble cyanides in water. Cyanide as hydrocyanic acid (HCN) is released from cyanide complexes by means of a reflux-distillation and absorbed in a scrubber containing a sodium hydroxide solution.