1,4,7,8-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Back Catalog number: DF-1478-S Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended DF-IS-J20 Mass-Labelled PCDD Internal Standard Solution, 1.2ml, nonane Price on request 676673 D7-Atenolol, 5mg Price on request 11319.13-K-ME Melatonin,1000 µg/mL,MeOH,1mL, Price on request