The FALC WB - U baths for extractors are available with single baths for the WB - U models, and multiple baths insulated separately with glass fibre for the WB - S models, for simultaneous precise operation of each tank at different temperatures. Each tank is fitted with a filling and level device whilst the WB - U model is also fitted with a hole for a thermometer. All baths are provided whit a bimetallic temperature regulator with graduated centigrade scale and sensor for each tank.