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

Germanium (Ge), 100 µg/mL in 2%-HNO3 / Water, 4x25ml

CONOSTAN S-21 + AS+Co+Sb+Se, 300ppm in 75cSt oil, 200g

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