Aluminum Standard: Al @ 1000 µg/mL in 5% HNO3, 100mL

Cobalt Standard: Co @ 1000 µg/g in 75 cSt Hydrocarbon Oil, 50g

CONOSTAN Standard S-21+K, 885 ppm, 200g

Nitrite (NO2-) as N, 1000µg/ml in Water, 100ml