EPA Method 508 - Performance Check Solution Back Catalog number: 19132 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended A10825000AL-100 Budesonide, 100µg/mL in Acetonitrile, 1ml Price on request 1356.6-100-DC Hexachlorobenzene, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 118-74-1 Price on request 3354.10-100-CY 2,4-DB Price on request