(TCLP) Standard (2 Bottle Set)

2',3,4',5,5'-Pentachloro-4-[13C12]biphenylol, 1.2ml x 50ug/ml, toluene

Phthalic acid, bis-nonyl ester, 250mg

Dibutyltin-d18 dichloride, 1000µg/ml in MeOH, 1ml