PCB Congener Internal Standard Mix Back Catalog number: 94569 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-I200 Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request 12049.15-100-ME Bendroflumethiazide,100 µg/mL,MeOH,1mL, Price on request 31030 Chloramben methyl derivative Price on request