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

Phosphate (PO4-3) as P, 1000µg/ml in Water, 100ml

Cu @ 1000 µg/mL in 5% HNO3, 100ml

Sulfur, 1500µg/g (0.150 wt%) in 75 cSt Mineral Oil, 100ml