Cu @ 1000 µg/mL in 5% HNO3, 100ml

Sn @ 10000 µg/mL in 5% HNO3, tr. HF, 100ml

Nitrite Standard: NO2-, 1000µg/mL iin Water, 100ml

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