Chamber IKA VOL-C-RTD-4.2 The optional chamber VOL-C-RTD-4.2 for VOLS-1 is especially suitable for expensive and valuable samples. A temperature sensor is already integrated in the chamber and thus allows for temperature measurement during viscosity determination. It is required to use the VOL-SP-4.2 spindle in combination with the 4.2 ml chamber VOL-C-RTD-4.2. The spindle is available as accessory.