0.2 g of dried nitrocellulose is put into a 125 mm tall test tube with an inside diameter of 15 mm and a wall thickness of 0.5 mm, which is placed in a Wood’s metal bath that has been heated to 100°C. The test tube must be immersed exactly 20 mm into the metal bath. The centre of the calibrated thermometer must be level with the bottom of the test tube. The temperature of the metal bath is incremented by 5°C every minute. As soon as the nitrocellulose self-ignites (as can be heard from the deflagration that occurs), the temperature (i.e. deflagration temperature or ignition point) is read off. The deflagration temperature of Walsroder Nitrocellulose is above 180°C in compliance with regulations, and that of Walsroder NC-Chips is above 170°C.