Fluoride (F-), 10µg/mL in Water, 500ml

Sn, 1000 µg/mL in 5% HNO3, 100ml

Cr @ 1000 µg/mL in 5% HCl, 100ml

S @ 10000 µg/g (1.00 wt%) in #2 Diesel Fuel, 100ml