EPA Method 525.2 - 526 Internal Standard Back Catalog number: 91297 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3397.13-100-AN Fenamiphos sulfoxide Price on request 12356.14-100-ME Monocyclohexyl phthalate-3,4,5,6-d4, 100µg/ml in MeOH, 1ml Price on request 70104 Decafluorobiphenyl Price on request