ELEMENTS by ICP 7301 (Aqua Regia Ashing)

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6. Add 2 mL ashing acid and repeat step 5. Rep eat this step until the solution is clear. NOTE: PVC filters will not completely dissolve after repeated additions of ashing acid. 7. Remove watchglass and rinse into the beake r with distilled water. 8. Increase the tem perature to 150 °C and take the sample to near dryness (ca. 0.5 m L). 9.

  Acid, Elements, Elements by icp 7301, 7301