California Gas Additive Standard

1-Methylphenanthrene/Phenanthrene = 1:2 (0,67) 1000 + 2000 µg/ml in isooctane, 1mL pr. vial

Nitrate & Nitrite as N

(-)-α-1R,2R,5S,6R,9R,10S-Hexabromocyclododecane, 1.2ml x 50ug/ml, toluene