EPA Method 200.8 Internal Standard Back Catalog number: 56332 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70454 Benzo(g,h,i)perylene-d12, 1000µg/ml in Methylen Chloride, 1ml Price on request N0560000 Niclosamide (anhydrous), 50mg Price on request 92221 VOC Mix B, 2000ug/ml in MeOH, 1ml Price on request