EPA Method 624Mix #1 - Purgeables Back Catalog number: 40021 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 2539.8-100MG 4-Hydroxyisophthalic acid (4-Hydroxybenzene-1,3-dicarboxylic acid), neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 636-46-4 Price on request YA19000017ME Phenol-Mix 17, 1000µg/mL in MeOH, 1ml Price on request 681404 6-alpha-Methylprednisolone, 50mg Price on request