NF A22-404*NF ISO 312:1987
Manganese ores. Determination of active oxygen content, expressed as manganese dioxide. Titrimetric method.

Standard No.

NF A22-404*NF ISO 312:1987

Release Date

1987

Published By

Association Francaise de Normalisation

Latest

NF A22-404*NF ISO 312:1987

Replace

NF A06-097:1959

NF A22-404*NF ISO 312:1987 history

• 1987 NF A22-404*NF ISO 312:1987 Manganese ores. Determination of active oxygen content, expressed as manganese dioxide. Titrimetric method.
• 0000 NF A06-097:1959