Acid Surrogate Standard Back Catalog number: 21005 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10613.38-10UG Tribenzo[de,h,kl]naphtho[1,2,3,4-rst]pentaphene Price on request 10242.14-100MG 2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid hydrate (contains 5-10% isopropyl alcohol), neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 4065-45-6 Price on request 34052 EPA Method 524.2 - Additional Analytes Price on request