Dey-Engley neutralizing broth
Кат. номер |
D3435-500G |
D3435-VAR |
Dey-Engley neutralizing broth has been used to premoisten the sponge swab samples to neutralise the residual action of the disinfectants on the microbiological growth. It has also been used to resuspend the
Vermamoeba (Hartmannella) vermiformis cysts to neutralize peracetic acid (PAA).
Dey-Engley Neutralizing Broth is used in disinfectant testing where neutralization of the antiseptics and disinfectants is important for determining bactericidal activity.
The Dey-Engley Neutralizing Broth neutralizes a broad spectrum of antiseptics and disinfectants including, quaternary ammonium compounds, phenolics, iodine, chlorine, mercurials, formaldehyde and glutaraldehyde. Sodium thioglycollate, sodium thiosulphate, sodium bisulphite, soya lecithin and polysorbate 80 act as neutralizing components. Growth is indicated by a color change from purple to yellow.
Ingredients(g/L)
Casein enzymatic hydrolysate5.00
Yeast extract2.50
Dextrose10.00
Sodium thiosulfate6.00
Sodium thioglycollate1.00
Sodium bisulfite2.50
Lecithin7.00
Polysorbate 805.00
Bromocresol purple0.02
Suspend 39 g of Dey-Engley Neutralizing Broth in 1000 ml of distilled water. Boil to dissolve the medium completely. Sterilize by autoclaving 15 lbs. pressure (121°C) for 15 minutes.
We offer two media types: the superior granulated GranuCult® and the cost-efficient powdered NutriSelect® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany
Quality Level | 200, 100 |
sterility | non-sterile |
form | powder |
shelf life | limited shelf life, expiry date on the label |
Торговая марка | NutriSelect® Plus |
application(s) | microbiological culture: suitable, microbiology: suitable, sterility testing: suitable, surface monitoring: suitable |
final pH | 7.6±0.2 (25 °C) |
Featured Industry | Environmental Food and Beverages Pharmaceutical |
storage temp. | 2-8°C |
suitability | nonselective for Bacillus spp., nonselective for Escherichia coli, nonselective for Pseudomonas spp., nonselective for Salmonella spp., nonselective for Staphylococcus spp., nonselective for bacteria (General Media), nonselective for coliforms |
pictograms | GHS07 |
signalword | Warning |
hcodes | H317 |
pcodes | P261 - P272 - P280 - P302 + P352 - P333 + P313 - P362 + P364 |
Personal Protective Equipment | Eyeshields, Faceshields, Gloves |
RIDADR | NONH for all modes of transport |
WGK Germany | WGK 3 |
Flash Point F | Not applicable |
Flash Point C | Not applicable |