Wescor Equipment List Wescor - Vapro 5520Manufactured by Wescor Wescor - Vapro 5600Manufactured by WescorVapor Pressure Osmometer Wescor - Model 4420Manufactured by WescorColloid Osmometer Page 1 of 1 1Ask a QuestionGet answers for Wescor ProductsSign in to Submit QuestionSubmit Question