1. Vapor types a) Moist air+formaldehyde. Expose part for 10 min at room temp. b) Live steam. Expose for 5 min. Not usable with plastics. 2. Dip types a) Boiling Water. Soak 5 min not usable with plastics. b) formaldehyde 10% water solution. Soak 10 min, rinse with hot water, dry. c) 70% denatured Alcohol. Dip and dry. d) 3% Cresol solution. Soak 2-5 min, wash with hot water to remove all cresol; dry.