Multielement standard solution 4 for ICP, 100ml

Chromium (Cr), 1µg/ml in 2%-HNO3 / Water, 100ml

Total Cyanide (CN-), 100µg/ml in in H2O/NaOH,100ml

Sulfide (S), 1000µg/mL in Tr. NaOH / Water, 3 x 20ml