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Confirm Gram stain reaction of anaerobes and presumptively identify anaerobic, gram negative bacilli with Thermo Scientific™ Remel™ Rifampin Disk. Proposed in 1971 by Sutter and Finegold1 who recommended a method to identify anaerobic, gram-negative bacilli based on the difference in response to an antibiotic. Accordingly, organisms can be grouped based on their characteristic inhibitory patterns with erythromycin, rifampin, colistin, penicillin, kanamycin and vacomycin2,3.
| Description | Rifampin Disk |
| Concentration | 15 μg |
| Detectable Analytes | Anaerobic Gram-negative bacilli (Bacteroides and Fusobacterium species) |
| Quantity | 25 Disks |
| Unit Size | Each |
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Special potency antibiotic disks can be used to presumptively identify anaerobic bacteria3,4.
- Ready to use - Vancomycin-impregnated disk
- Easy to interpret - With visual inspection
Rifampin Disk contains 15 μg rifampin.
Disks impregnated with erythromycin, rifampin, colistin, penicillin, kanamycin and vancomycin can be used to identify anaerobic, gram negative bacilli based on the zone of inhibition they exhibit. Colistin and vancomycin confirm the gram stain reaction which is helpful with the clostridia that stain gram-negative. Penicillin, rifampin and kanamycin separate Bacteroides and Fusobacterium.
- Sutter, V.L. and S.M. Finegold. 1971. Appl. Microbiol. 21:13-20.
- Leigh, D.A. and K. Simmons. 1977. J.Clin. Pathol. 30:991-992.
- Forbes, B.A., D.F. Sahm, and A.S. Weissfeld. 2002. Bailey and Scott’s Diagnostic Microbiology. 11th ed. Mosby, St Louis, MO.
- Summanen, P., E.J. Baron, E.M. Citron, C.A. Strong, H.M. Wexler, and S.M. Finegold, 1993. Wadsworth Anaerobic Bacteriology Manual. 5th ed. Star Publ. Co. Belmont, CA.
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