Base/Neutral & Acid Surrogate Standard Back Catalog number: 25015 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673778 2,4-DB-methyl ester, 10.0 µg/ml, Ethyl acetate, Price on request 3670.11-K-IO 2-Methyl-1-naphthol, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 7469-77-4 Price on request 71648 Propionic acid isobutyl ester Price on request