Internal Standards Mix 33, 2000 ng/µl, 1ml Back Catalog number: YA08273300TO Availability: In the manufacturer's stock Price on request - + Recommended 79018 4,4’-DDT Price on request PN-54S 1,2,3,6,7-Pentachloronaphthalene, 1.2mL x 50ug/mL, nonane Price on request 71779 2,5-Dimethylbenzyl chloride Price on request