Potassium tellurite Solution 1% [Pack of 10]

Description

Aqueous solution of potassium tellurite at 1%, sterilized by filtration and suitable for use as an inhibitor additive in culture media.

Composition
Potassium tellurite………………………10.0
Sterile water……………………………… 1000 ml
Reagent to be added, as inhibitor, into culture media for staphylococci isolation.

Potassium Tellurite Solution is added to culture media as an inhibitor. Its purpose is to prevent the growth of most Gram negative bacteria and of those Gram positive bacteria unable to reduce it.
It is used in media such as Giolitti-Cantoni Broth, Vogel-Johnson Agar, Baird Parker and other selective media for staphylococci. This solution is also contained in selective media for corynebacteria, streptococci and vibrios.

There is a high correlation between the ability to reduce potassium tellurite to tellurium and the pathogenicity of staphylococci, therefore, the presence of potassium tellurite in a medium, together with other tests, helps to determine staphylococci of clinical interest. Potassium Tellurite Solution should be stored at room temperature, since low temperatures will cause crystallization and later precipitation of the product. Should this occur, intense agitation will help redissolve the sediment. Due to its thermolability, the potassium tellurite It is recommended not to subject it to temperatures above 40ºC.

Note: This product is transparent but precipitates may appear without affecting perfomance of the medium