ollowing Types:Teleflo Humidity Moisture or Carbon dioxide Silica Gel Breather Separator Absorber or Eliminator.Silica gel breathers are used for absorption of moisture vented from storage tanks. They haveĀ desiccant or absorbers like silica gel packing available in industrial and food grades. Similarly carbondioxide absorbers (C02 ) absorbers have suitable soda lime or caustic packing to suit the service requirements. They are provided with view glass. They are designed to handle high flows and can be supplied with weather hood or goose neck arrangement for outdoor installations.