As @ 1000 µg/mL in 5% HNO3, 100ml

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

Mn, 1000 µg/mL in 5% HNO3, 100ml

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