Millipore Dey-Engley Neutralizing Broth, Powder, Suitable For Microbiology, NutriSelect Plus 500 G Purple

D/E Neutralizing Broth. Dey-Engley Neutralizing Broth is used in disinfectant testing where neutralization of the antiseptics and disinfectants is important for determining bactericidal activity. Dey-Engley Neutralizing Broth is used in disinfectant testing where the ...D/E Neutralizing Broth.

Dey-Engley Neutralizing Broth is used in disinfectant testing where neutralization of the antiseptics and disinfectants is important for determining bactericidal activity. Dey-Engley Neutralizing Broth is used in disinfectant testing where the neutralization of the antiseptics and disinfectants is important for determining its bactericidal activity. The broth consists of tryptone that provides nitrogen and carbon sources, long chain amino acids, vitamins, and other essential nutrients.

Dextrose is an energy source. Yeast extract is also a rich source of vitamin B-complex. Sodium bisulfite neutralizes aldehydes; sodium thioglycolate neutralizes mercurial; sodium thiosulfate neutralizes iodine and chlorine; lecithin neutralizes quaternary ammonium compounds; and polysorbate 80, a non-ionic surface-active agent, neutralizes substituted phenolics.

Bromocresol purple is an indicator for dextrose utilization. Those organisms that ferment dextrose will turn the medium from purple to yellow. Growth of Pseudomonas sp., which does not ferment dextrose, can be detected by the formation of a pellicle on the surface of the broth.