Common Anions EPA 300A Mix Back Catalog number: 59422 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10731.21-10MG Biperiden Hydrochloride (Enantiomers) Price on request DF-IS-I Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request BFR-LCS Labelled Compounds Stock Solution, 1.2ml, toluene Price on request