Phthalic acid, bis-phenyl ester, certified, 0.5g

Kresoxim-methyl, 10 µg/ml, Ethyl acetate, 10ml

4-Methyl-2-pentanone, 100µg/mL in MeOH, 1ml

Pristane/n-Heptadecane Control Standard/Whole Oil Control Mixture 4 Pristane/n-Heptadecane = 1:2 (1000µg Pristane and 2000µg n-Heptadecane in 1mL isooctane)