Minimum assay (Acidim.)............................................................... 95,0 %

MAX. IMPURITIES

APHA colour...........................................................................................10

Residue on ignition..................................................................... 0,0005 %

Reducing substances to KMnO4 (as SO2)................................... 0,0002 %

Suitability for COD determination according to UNE 77-004-89......... p/t.

Chloride (Cl).............................................................................. 0,00002 %

Phosphate (PO4)....................................................................... 0,00005 %

Nitrate (NO3).............................................................................. 0,00002 %

Ammonium (NH4)........................................................................ 0,0002 %

Heavy metals (as Pb).................................................................. 0,0001 %

Ag........................................................................................... 0,000002 %

Al............................................................................................ 0,000005 %

As........................................................................................... 0,000001 %

Be........................................................................................... 0,000002 %

Ca............................................................................................. 0,00002 %

Cd........................................................................................... 0,000002 %

Co........................................................................................... 0,000002 %

Cr............................................................................................ 0,000005 %

Cu........................................................................................... 0,000001 %

Fe.............................................................................................. 0,00001 %

K............................................................................................... 0,00001 %

Li............................................................................................. 0,000002 %

Mg.......................................................................................... 0,000005 %

Mn.......................................................................................... 0,000001 %

Na............................................................................................. 0,00005 %

Ni............................................................................................ 0,000002 %

Pb........................................................................................... 0,000002 %

Sr............................................................................................ 0,000002 %

Zn........................................................................................... 0,000005 %