CLP Semi-Volatile Internal Standard Back Catalog number: 13009 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2719.4-50-ME Perfluorobutane sulphonate, potassium salt, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 29420-49-3 Price on request C16171830 Phthalic acid, bis-C6-C8-branched alkyl esters C7-rich, 100mg Price on request 681257 trans,trans-Muconic acid, 100mg Price on request