EPA Method 525.2 Pesticide Level 4 Back Catalog number: 92843 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677946 TFNA-AM, 100 µg/ml, Acetonitrile, 1ml Price on request 53079 Instrument Standard 3 Price on request 58037 Rubidium (Rb) Price on request