pH 4.0 Standard @ 25°C Back Catalog number: 59436 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended M3PFHXS Sodium perfluoro-1-[1,2,3-13C3]hexanesulfonate, 1.2ml x 50ug/ml, methanol Price on request 79571 2-(2-Butoxyethoxy)ethanol Price on request 70344 4-Chlorophenol Price on request