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VRB (Violet Red Bile Lactose) agar
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产品别名
VRB (Violet Red Bile Lactose) agar
Crystal-violet neutral red bile agar, VRB-agar (Crystal-violet neutral-red bile agar)
产品性质
agency | ISO |
Quality Level【质量水平】 | 200 |
reg. compliance | FDA |
form【形式】 | medium granules (dehydrated (DCM)) |
manufacturer/tradename | GranuCult® |
technique(s) | microbiological culture: suitable |
pH【pH值(酸碱度)】 | 7.3-7.5 (37 ℃, 40 g/L in H2O, after autoclaving) |
solubility【溶解性】 | 39.5 g/L |
bulk density【堆积密度】 | 670 kg/m3 |
application(s) | food and beverages microbiology |
storage temp.【储存温度】 | 15-25℃ |
suitability【适用性】 | coliforms |
基本信息
Linkage【联系】 | Replaces: 1014065007 |
Analysis Note【分析说明】 | Appearance (clearness): clear Appearance (colour): red pH-value (25 °C): 7.2 - 7.6 Solidification behaviour (2 hrs., 45 °C): liquid Growth promotion test in accordance with the current version of DIN EN ISO 11133. Inoculum on reference medium (Escherichia coli ATCC 8739 (WDCM 00012)): Colony count (Escherichia coli ATCC 8739 (WDCM 00012)): Recovery on test medium (Escherichia coli ATCC 8739 (WDCM 00012)): ≥ 50 % Colony colour (Escherichia coli ATCC 8739 (WDCM 00012)): purplish-red colonies with or without precipitate halo Inoculum on reference medium (Escherichia coli ATCC 25922 (WDCM 00013)): Colony count (Escherichia coli ATCC 25922 (WDCM 00013)): Recovery on test medium (Escherichia coli ATCC 25922 (WDCM 00013)): ≥ 50 % Colony colour (Escherichia coli ATCC 25922 (WDCM 00013)): purplish-red colonies with or without precipitate halo Inoculum on reference medium (Enterobacter cloacae ATCC 13047 (WDCM 00083)): Colony count (Enterobacter cloacae ATCC 13047 (WDCM 00083)): Recovery on test medium (Enterobacter cloacae ATCC 13047 (WDCM 00083)): ≥ 50 % Colony colour (Enterobacter cloacae ATCC 13047 (WDCM 00083)): purplish-red colonies with or without precipitate halo Growth (Pseudomonas aeruginosa ATCC 27853 (WDCM 00025)): no limit Colony colour (Pseudomonas aeruginosa ATCC 27853 (WDCM 00025)): colourless to beige colonies Growth (Enterococcus faecalis ATCC 19433 (WDCM 00009)): total inhibition Growth (Enterococcus faecalis ATCC 29212 (WDCM 00087)): total inhibition Incubation: 24 ± 2 hours at 30 ± 1 °C Reference media: Tryptic Soy Agar A recovery rate of 50 % is equivalent to a productivity value of 0.5. The indicated colony counts result from the sum of a triple determination. |
Footnote【附注】 | 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. |
Legal Information【法律信息】 | GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany |
安全信息
Storage Class Code【储存分类代码】 | 11 - Combustible Solids |
WGK | WGK 3 |