EPA Method 551.1 Performance Check Soln Back Catalog number: 30104 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675413 D6-Diuron, 100 µg/ml, Acetone, 1ml Price on request 679199 Sulfentrazone, 100mg Price on request 90128R Aroclor 1254 Price on request