Formaldehyde-DNPH Level 2 (0.5ug/mL) Back Catalog number: 98859 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11806.12-50-NN 1,3,7-Trichlorodibenzo-p-dioxin,50 µg/mL,n-nonane,1mL, Price on request 70249 Phenanthrene-d10, 1000µg/ml in MethyleneChloride, 1ml Price on request 685071 epsilon-HCH, 10.0 µg/ml, Cyclohexane, 1ml Price on request