Samplers for gas and liquified gas sampling S32-LG Series DOPAK® S32-LG Series including externally coupled valves is designed to take representative samples of liquiefied gases in cylinders with internal or external outage. Purge options are available. TO LEARN MORE S32-G Series DOPAK® S32-G Series including externally coupled valves is designed to take representative samples of gases in cylinders. Purge options are available. TO LEARN MORE