Freeze Point Furnace of Tin

Mptest specializes in the manufacture of fixed-point temperature realization apparatus traceable to the ITS-90. The GD-2300S is a realization apparatus designed specifically for the tin freezing point. It features a temperature control stability of ±0.02 °C and a bath chamber with an aperture of 63.5 mm. The unit is equipped with a color touchscreen controller that accepts inputs from Standard Platinum Resistance Thermometers (SPRTs) and provides a real-time curve display for observing the temperature plateau. It also includes a rate-based temperature control function to prevent excessively fast heating or cooling rates. The system utilizes a metallic bath design integrated with a heat-transfer sleeve to ensure optimal thermal conductivity. This key feature effectively mitigates overheating, thereby safeguarding the valuable fixed-point cell and preserving its measurement integrity.