EPA 1620 Standard 2 Back Catalog number: 52140 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 40057 EPA Method 642 - Analytes Price on request 71138 1,3,5-Trifluorobenzene Price on request 3706.10-100-05HC Gonyautoxin-1 and -4, 106+35µM, Solvent-HCl/AcOH(Aq), Unit 0.5mL, # of units-1, Cas.no. 60748-39-2/64296-26-0 Price on request