Optochin is water-soluble and diffuses readily into an agar medium. Filter paper disks impregnated with optochin can be used in a disk diffusion test format to determine the susceptibility of suspected pneumococci and, thereby, confirm their identity as such.

2025年3月12日 · Streptococcus pyogenes = Group ? Study with Quizlet and memorize flashcards containing terms like Optochin, 5% Sheep blood, Susceptible and more.

The 6mm dia. (1 / 4 ") discs are made from high quality absorbent paper that has been impregnated with approximately 5µg ethylhydrocupreine hydrochloride (optochin), which markedly inhibits the growth of pneumococci, but not of other streptococci.

2023年3月31日 · Fortunately, Bowen and Jeff in 1955 impregnated a disk with optochin and proposed to use it as a method to differentiate S. pneumoniae from other viridans Streptococci. This method is termed an optochin susceptibility test to identify the pneumococcus bacteria.

This can be detected by a zone of inhibition around a Taxo P® disc (see Fig. \(\PageIndex{1}\)), a paper disc containing the drug optochin, which is placed on the Blood agar plate prior to incubation.

BD BBL™ Taxo™ P Discs (Cartridge) Print For presumptive identification of pneumococci, and are intended for use with pure cultures

For all experiments, BD BBL Taxo P Discs were used. They contain 5 μ g of optochin each. The cut-off for this disk is 14 mm; that is, S. pneumoniae causes diameters of inhibition zones (DOIZ) ≥ 14 mm.

Taxo P Discs are 6 mm discs made from high quality absorbent paper impregnated with approximately 5.0 µg of ethylhydrocupreine hydrochloride per disc More Information. SDS

Differentiate Streptococcus pneumoniae from other streptococci using Thermo Scientific™ Oxoid™ Optochin Disc. Optochin Discs are paper discs ready impregnated with Optochin (ethylhydrocuprein hydrochloride) which provide a convenient and …

Study with Quizlet and memorize flashcards containing terms like What is the purpose of the test?, Discs are used for the presumptive identification of what organism? (Positive result), What size zone of inhibition would be considered susceptible? and more.