EPA Method 525.2 - 526 Internal Standard Back Catalog number: 91297 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended A12677540AL-100 Dimethenamid-oxalamid, 100µg/mL in Acetonitrile, 1ml Price on request 3640.5-K-IO Methyl isobutyrate , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 547-63-7 Price on request 82707 Appendix IX Semi-Volatiles Price on request