EPA Method 515/8150/1658 Herbicides Back Catalog number: 31196 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673099 Propyphenazone, 250mg Price on request 3642.4-1G 1,2,4-Butanetriol, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 3068-00-6 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