Cadmium, 1000ug/ml, 100ml

Cr @ 1000 µg/mL in 5% HCl, 100ml

Nitrate (NO3-) as N, 1000µg/mL in Water, 100ml

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