Chamber IKA The optional chamber VOL-C-RTD-3.8 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-3.8 spindle in combination with the 3.8 ml chamber VOL-C-RTD-3.8. The spindle is available as accessory.