EPA Method 531.1 - Analytes Mixture Back Catalog number: 33042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 40004 EPA Method 604.1 Analytes Price on request 3753.18-K-IO 4-tert-Octylphenol 2EO, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2315-61-9 Price on request 79492 Mecoprop Price on request