EPA Method 8240A Sys Perf Check Cmpds

4-n-Nonylphenol-mono-ethoxylate, 100 µg/ml, Aceto

Norfluoxetine-d5 (propyl-1,1,2,2,3-d5), neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 1185132-92-6

o-Cresol-d8 & p-Cresol-d8