EPA Method 525 Internals & Surrogates Back Catalog number: 91161 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9016.4-K-DC N-Nitrosopyrrolidine-d8, 1000µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 1219802-09-1 Price on request 676361 Cefquinome sulfate, 100mg Price on request 675980 D5-Atrazine, 100 µg/ml, Acetone, 1ml Price on request