EPA Method 502.2 Internal Standard Back Catalog number: 91703 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0252.20-K-IO 1,1'-Binaphthyl, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 604-53-5 Price on request 678515 Trichloronate, 100 µg/ml, Acetonitrile, 5ml Price on request 59066 Ca, Mg, Na, K Mix Price on request