Gas Internal/Surrogate Standard Back Catalog number: 92805 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended BB-154 2,2',4,4',5,6'-Hexabromobiphenyl, 1.2ml x 50ug/ml, nonane Price on request 71222 1,2,4,5-Tetramethylbenzene Price on request 685232 1,4-Dimethylnaphthalene, 100 µg/ml, Cyclohexane, Price on request