Anions Mix Back Catalog number: 50021 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 31057 EPA Method 552.1 - Surrogate Standard Price on request 59762 Cation Mix Price on request 3670.11-100-IO 2-Methyl-1-naphthol, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 7469-77-4 Price on request