5.2.4.5 Procedure of induction furnace (IF) combustion
Turn on power source of apparatus, adjust each part to stabilize. When each part stabilizes, check for air-tightness.
Transfer the sample to the combustion crucible and add to it 1 g of copper, Cu, and 1 g of iron, Fe, or 1 g of copper and 1 g of tungsten, W, or 1 g of iron and 2 g of tungsten as accelerator. Then the ceramic cover is placed on the crucible. The crucible is placed in the furnace.
This is unit dependent. Put the crucible on its holder and hold it by using a supporting bar at the specified place.
Then, flow oxygen at a specified pressure and amount. Operate the high-frequency heating furnace for the specified time. The combustion gas is transferred in the detection unit at the user’s own option.
Modern IF combustion units available on the market work automatically. Operate in accordance with the operating instructions.