The TV4000 visibility bath is designed for applications requiring ultra-precise temperature control and visual monitoring, such as kinematic viscosity testing (ASTM D445, IP 71), thermometer calibration, and reaction rate measurement. It features seven positions for viscometer placement and large double safety-glass windows for excellent visibility. The stainless steel construction, combined with 25 mm insulation and an advanced stirring system, ensures exceptional temperature stability.

The bath operates from ambient +5 °C to 230 °C with ±0.01 °C accuracy and 0.01 °C setpoint resolution. Integrated cooling coils allow operation below ambient. Safety features include CE compliance, a mechanical resettable thermostat, fluid-level float switch, and microprocessor-controlled heating. Optional LED illumination enhances visibility inside the bath.