Heptenophos, 10.0 µg/ml, Acetone, 10ml Back Catalog number: 681952 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-J Mass-Labelled PCDD Internal Standard Solution, 1.2ml, nonane Price on request DD-1-S 1-Chlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane Price on request 2538.14-100-ME Naproxen, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 22204-53-1 Price on request