Base/Neutral & Acid Surrogate Standard Back Catalog number: 25015 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11750.12-100-IO 2,3,3',4,4',6-Hexachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request TPP Triphenyl phosphate, 1.2ml x 50ug/ml, toluene Price on request 71175 Polyethylene glycol Price on request