Thermo Fisher, R21123, Colistin Disk

Quantity: 25 Disks
Unit Size: Each
Confirm Gram-stain reactions of anaerobes and presumptively identify anaerobic, Gram-negative bacilli with Colistin Disks.
• Ready to use: Colistin-impregnated disk.
• Easy to interpret:Sensitive organisms exhibit an inhibitory zone greater than 10 mm around the antibiotic disk while resistant organism exhibit no inhibitory zone i.e., a zone that is less than 10 mm around the disk.Colistin Disk contains 10 μg colistin.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 Clostridia that stain Gram-negative. Penicillin, rifampin and kanamycin separate Bacteroides and Fusobacterium.