Semi-Volatile Surrogate Standard Back Catalog number: 93927 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-12379-S 1,2,3,7,9-Pentachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 93031 Glycol Standard Price on request 676397 2,4-Dichlorotoluene, 250mg Price on request