KO-19 along with KO-17 Penetrant and D-350 Developer comprise Sherwin Inc’s Hi-Temp Penetrant System, which works at temperatures above which ordinary penetrants are ineffective. It is used in the penetrant process to remove excess KO-17 Hi-Temp Penetrant from part surfaces or for cleaning an insoection surface prior to applying KO-17 Penetrant. KO-19 meets low halogen and low sulfur requirements. It is a nonchlorinated material and non-miscible in water. It is relatively volatile and evaporates completely and rapidly.