The wear parts set for the C 6000 calorimeter and C 6012 decomposition vessel includes various O-rings and seals plus a ventilation hose with capillary, two Hastelloy ignition and ground electrodes, 4 platinum ignition wires, a complete piston, a nozzle, two compression springs and spare Hastelloy nuts. The number of parts included is designed for up to 1000 calorific value determinations. However, the number of tests that are actually possible also depends on the application/sample type. The wear parts set for the C 6000 calorimeter and C 6012 decomposition vessel includes various O-rings and seals plus a ventilation hose with capillary, two Hastelloy ignition and ground electrodes, 4 platinum ignition wires, a complete piston, a nozzle, two compression springs and spare Hastelloy nuts. The number of parts included is designed for up to 1000 calorific value determinations. However, the number of tests that are actually possible also depends on the application/sample type.