EPA Method 525 - Internal Standard Back Catalog number: 30031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended M-8315-DNPH-10ML Acetaldehyde-DNPH & Formaldehyde-DNPH, 10mL Price on request 683731 beta-Cypermethrin, 10.0 µg/ml, Ethyl acetate, 10 Price on request 72382 Fipronil Price on request