7H-Perfluoroheptanoic acid, 50µg/ml in MeOH, 1ml Back Catalog number: 2835.7-50-ME Manufacturer: CHIRON AS Availability: 3 weeks Price on request - + Recommended 53120 EPA Method 353.2 Nitrate + Nitrite Price on request 679375 Chlorpyrifos-methyl, 10.0 µg/ml, Cyclohexane, 10 Price on request 680254 Phosmet-oxon, 10.0 µg/ml, Acetonitrile, 10ml Price on request