EPA Method 500 Series Internal Standard #5 Back Catalog number: 30004 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 1307.12-100-ME 2,2,4,6,6-Pentamethyl-3-heptene, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 123-48-8 Price on request 96550 Methaqualone-D4 Price on request 673480 Bifenthrin, 10.0 µg/ml, Ethyl acetate, 10ml Price on request