EPA Method 500 Series Internal Std #4 Back Catalog number: 32003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3355.11-100-AN 2,4-DB methyl ester Price on request 2473.7-K-IP 2,4-Dibromoanisole, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 21702-84-1 Price on request 59073 EPA 300.0 Standard Price on request