Cations Mix Back Catalog number: 59503 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2539.8-K-ME 4-Hydroxyisophthalic acid (4-Hydroxybenzene-1,3-dicarboxylic acid), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 636-46-4 Price on request 95493 EPA Method 524.3 Analytes Price on request 94168 Volatile Mix #1 Price on request