Perfluoro-n-butanoic acid, 50µg/ml in MeOH, 1,2ml Back Catalog number: PFBA Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended DF-LCS-A Mass-Labelled PCDD/PCDF Solution/Mixture , 1.2ml , nonane Price on request 52094 Trace Metals 3 Price on request 685299 Benazolin-ethyl, 100 µg/ml, Acetonitrile, 5ml Price on request