EPA Method 8240A Calibration Check Compounds

(+/-)-Tridimefon-d4 (4-chlorophenoxy-d4),100 µg/mL,acetonitrile,1mL,

9377-2 Quality Control Standard of Mineral Oils A+B , 10000µg/mL in acetone (5000µg/mL of each), 10x1ml

4-Chlorophenol-2,3,5,6-d4, OD, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-5, Cas.no. 344298-84-6