NMAM 7903 Acids, Inorganic
ACIDS, INORGANIC: METHOD 7903, Issue 2, dated 15 August 1994 - Page 3 of 6. NOTE: Particulate salts of the volatile acids (HCl, HB, HF, and HNO. 3), if present in the air sample, will collect on the glass fiber filter plug. To estimate the concentration these salts, analyze the plug separately from the front sorbent section. 6.
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