EPA Method 552,552.1,552.2 Internal Std Back Catalog number: 30105 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673956 gamma-HCH, 10.0 µg/ml, Cyclohexane, 10ml Price on request 3699.0-10-05ME Pectenotoxin-2 seco acid, 10.0µM, Solvent-methanol, Unit 0.5mL, # of units-1, Cas.no. 212502-87-9 Price on request 58074 Tungsten (W) Price on request