EPA Method 8121 Internal Standard

1,2,3,7,8-Pentachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Arachidonic acid (5,8,11,14 all-cis), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 506-32-1

Custom mix, Deuterated Phenol Mixture 8,in toluene assorted concentrations 5x5mL C4: 2407.10 4-n-Butyphenol-d4 100µg/mL 2282.10 4-tert-Butylphenol-d9-2,3,5,6-d4 100µg/mL