Cefotetan-SD249-5x50ds is an antimicrobial susceptibility disc supplied by HiMedia. The product contains 5x50ds i.e., 5 vials of 50 discs each. Each disc contains a concentration of 30mcg/disc. Cefotetan-SD249-5x50ds is used for antimicrobial susceptibility test by Bauer-Kirby method. It contains filter paper discs of 6mm in diameter with printed CTN 30" at the center on each side of the disc.

The Cefotetan-SD249 discs are placed aseptically on inoculated Mueller Hilton Agar with centers at least 24 mm apart. For fastidious organisms and for Penicillins and Cephalosporins, the discs should preferably be deposited with centers 30 mm apart. Immediately the plates are incubated at 352C for 16-18 hours. For fastidious organisms, incubate at appropriate temperature and time. The diameter of the zones of complete inhibition are measured to the nearest mm.

The Cefotetan-SD249-5x50ds should be stored at -20C under dry conditions, along with the dessicator provided in individual pack.