规定方法的原理是将试验部分称重至具有毛细管开口的玻璃结焦球中，并将其放置在保持约550°C温度的金属炉中，从而快速加热试验部分至所有挥发性物质从球中蒸发的点，当灯泡中剩余的较重残渣在规定的加热时间内发生裂化和结焦反应时，取出灯泡，在干燥器中冷却并再次称重。该方法可用于测定蒸发和热解后留下的0,01%（m/m）至30,0%（m/m）范围内的碳残留物量。

The principle of the method specified is weighing a test portion into a glass coking bulb having a capillary opening and placing it in a metal furnace maintained at a temperature of approximately 550 °C, thus quickly heating the test portion to the point at which all volatile matter is evaporated out of the bulb, while the heavier residue remaining in the bulb undergoes cracking and coking reactions during a specified heating period, removing the bulb, cooling it in a desiccator and weighing again. The method may be used to determine amounts of carbon residues in the range of 0,01 % (m/m) to 30,0 % (m/m), left after evaporation and pyrolysis.