Muffler - an overview ScienceDirect Topics
After weighing the filter, return it to the aluminum weigh boat and oxidize the material at 500C for 1 h. 5. Remove filters with oxidized material from the muffle furnace and allow them to cool in the desiccator. 6. Weigh the filter (use forceps to remove filter from weigh boat) on an analytical balance (to the nearest 0.1 mg).
More details