EPA Method 531.1 - Analytes Back Catalog number: 30042R Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2358.4-100-ME Tetramethylammonium bromide, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 64-20-0 Price on request 59561 Conductance @ 20°C [100 µmho/cm] Price on request 55013 WS Trace Elements #2 Price on request