Mass-Labelled PCB Solution/Mixture , 1.2ml, nonane Back Catalog number: PCB-IS-B20 Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 95280 PAH IS/S Standard, 4000µg/ml in MeChl., 1ml Price on request 92559 EPA Method 624 Internal / Surrogate Standard Price on request 682169 (-)-delta-9-THC, 10.0 µg/ml, Methanol, 1ml Price on request