Thermo Scientific™ Remel™ Methyl Red Reagent

Description

• Test the ability of an organism to produce and maintain stable end products from glucose fermentation using Thermo Scientific™ Remel™ Methyl Red Reagent
• In 1915, Clarke and Lubs first described the methyl red test using it to differentiate between the coli-aerogenes group of enteric bacteria1
• The methyl red (MR) test uses methyl red as an indicator to determine the pH of the medium when an organism ferments glucose2
• All members of Enterobacteriaceae are, by definition, glucose fermenters and produce acidic by-products.Ready to Use: convenience of a prepared reagent.Easy to interpret:Positive Test - red color development on the surface of the mediumNegative Test - yellow color on the surface of the medium.Following initial incubation, all Enterobacteriaceae give a positive methyl red reaction if tested3
• However, on further incubation (2-5 days) MR – positive organisms continue producing acids overcoming the phosphate buffer resulting in a low pH and a red color development
• MR-negative organisms further metabolize the initial fermentation products by decarboxylation to produce neutral acetyl methyl carbinol (acetoin), which results in a neutral pH and no red color.The methyl red reagent contains 0.2 g methyl red indicator dissolved in 600 mL ethyl alcohol and 400 mL demineralized water supplied as 25 mL bottles.Not all products are available for sale in all territories
• Please inquire.Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.