EPA Method 502.2 Internal Standard Back Catalog number: 91703 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675838 Phosmet, 100 µg/ml, Toluene, 5ml Price on request 79086 Metolachlor Price on request J211030 JHSB3 , approximately 80%, 0,5mg Price on request