Sulfate (SO4-2), 1000µg/ml in Water, 500ml

Cr @ 1000 µg/mL in 5% HCl, 100ml

Strontium Standard: Sr @ 1000 µg/mL in 5% HNO3, 100mL

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