NP 1771-1985
Raw materials for the glass industry. sand. Measurement of chromium content by spectrophotometry

Standard No.

NP 1771-1985

Release Date

1985

Published By

PT-IPQ

Latest

NP 1771-1985

Scope

This Standard is intended to establis how to determine the chromium content of sand for the glass industry using the spectrophotometric process, with diphenylcarbazide.

NP 1771-1985 history

• 1985 NP 1771-1985 Raw materials for the glass industry. sand. Measurement of chromium content by spectrophotometry