A barrier technique for laboratory pressure pot

A routine culture of the internal surfaces of a laboratory pressure pot was performed. Candida albicans, Pseudomonas sp., and an unidentified gram-negative rod were isolated. Disposable plastic bags filled with water were used as a barrier to cross contamination during polymerization of repair acrylic resin in a pressure pot. No leakage of plastic bags occurred. The technique is practical and inexpensive.