VP

Catalogue number: 2004 / number of tests in pack: 50 / expiration: 24 months

VP is diagnostic strip intended for the detection of acetoin production in Voges-Proskauer reaction.

Test description:

Glucose is fermented by some microorganisms to acetoin. VP 1 reagent, ethanol solution of α-naphtol, deepens the final colouring and increases the sensitivity of the reaction. α-naphtol catalyses the conversion of acetoin in an alkaline medium (VP 2) to form diacetyl. KOH reacts with peptone. Diacetyl condenses with guanidin groups of peptone leading to formation of pink or red colour, what indicates positive result of the test.

To download:

Information leaflet

Published on: 23. 5. 2013