Calibration Standards Set Back Catalog number: 53016 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0614.29-100-IO 17ß(H),21 alpha(H)-30-Norhopane, 100µg/mLin isooctane, 1mL Price on request 684615 2-Butanone-2,4-DNPH, 100mg Price on request 3516.9-100-AN 2,4,5-T-methyl ester Price on request