Thermo Scientific™ Barnstead™ Classic still storage accessories complement your current system to create a more complete system. Accessories include mounting options, UV light assembly, Thermo Scientific™ Ventgard™ air filter and water seal. Choose either a floor stand or wall bracket as needed. Maintain sterility in the reservoir with the UV light assembly, which includes housing, on/off switch, 6' cord, lamp and ballast. Protect stored water against airborne particulate s, organics and CO2 with Ventgard™ air filter and water seal. Prevent air from entering the reservoir via the condenser atmospheric vent.