EPA Method 507 - Performance Check Solution Back Catalog number: 19137 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677199 D3-2,4-D, 100 µg/ml, Acetone, 1ml Price on request ME 20300 Aqueous Ethanol Standard (3,0g/l), 10 x 1,2ml Price on request 2218.24-K-IO Di-iso-nonyl adipate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 33703-08-1 Price on request