EPA Method 507 - Performance Check Solution Back Catalog number: 19137 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2662.10-100 Chlordane, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 57-74-9 Price on request LA20950183CY PAH-Mix 183, 10 ng/µl, 1ml Price on request 98557 Formaldehyde (5 ppm) Price on request