Calibration Standard Kit Back Catalog number: 53090 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 55042 CWA Sulfide Price on request 0613.30-100-IO 17ß(H),21ß(H)-Hopane, 100µg/min Isooctane, 1ml Price on request 681366 9-Hydroxyphenanthrene, 10mg Price on request