The wear parts set for the C 6000 calorimeter and C 6010 decomposition vessel includes various O-rings and seals plus a ventilation hose with capillary, two ignition and ground electrodes, 10 ignition wires, a complete piston, a nozzle, two compression springs and spare nuts. The number of parts included is designed for up to 1,000 calorific value determinations. However, the number of tests that are actually possible also depends on the application/sample type.