Calibration baths specially designed for tests that require ultra precise temperature control, or processes that need to be followed visually, eg viscometry, thermometer calibration, crystal growing, density and reaction rate measurement, etc.  All models are fitted with double windows in front and rear walls. The windows are formed with two panes of tempered safety glass separated by 20 mm air space. Visibility through the bath is excellent. All baths can be operated from  ambient +5 up to +230°C.