QC Standard 4 Back Catalog number: 53087 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94459 Trifluralin Price on request DF-1467-S 1,4,6,7-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 2585.30-10MG Dibenzo[a,c]pentacene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 216-08-0 Price on request