PCB No. 8 certified, 25mg

ISO 15680 Stock Internal Standard Solution 4 Analytes, each 2000µg/mL in methanol; unit: 1x5mL 2017.6 Fluorobenzene [462-06-6] 3942.6 1,4-Difluorobenzene [540-36-3] 3943.6Monochlorobenzene-d5 [3114-55-4] 1957.6

2,4,5-Trimethylphenol, 100 µg/ml, Acetonitrile,

L(+)Lactic acid