I am working on gasification, by adding K2co3 to char, when i completed by run, i found that crucible was stuck to balance arm of netzsch tga system. when i applied little force, crucible was removed, but the ash as there on platinum surface ( balance arm of tga, on which crucible rests.) i discuused with service engineer, he asked to heat it in oxygen medium, so i heated till 950 degree, but that white colored ash was now black. what should i do to remove that.
Please help.
About cleaning platinum material ― You can consider to follow the cleaning procedure that I have posted elsewhere at this forum: https://www.researchgate.net/post/Hi_good_afternoon_I_want_to_know_how_can_I_clean_a_platinum_sample_holder_that_for_an_accident_is_dirty_with_a_molten_Schiff_base_after_make_a_TGA https://www.researchgate.net/post/How_to_clean_up_the_platinum_crucible_used_in_thermal_analysis
About cleaning alumina material ― You may want to check the cleaning procedure that I have suggested at: https://www.researchgate.net/post/How_to_wash_the_alumina_tubeWhich_chemical_is_best_for_washing_the_alumina_tube_so_that_no_cracks_form_on_surface_of_tube
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