Calibration Standard Set Back Catalog number: 52042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended BB-38 3,4,5-Tribromobiphenyl, 1.2ml x 50ug/ml, nonane Price on request 675601 Vamidothion, 100 µg/ml, Ethyl acetate, 5ml Price on request 100031-1-100ML Mg, 1000 µg/mL in 2% HNO3, 100ml Price on request