Specifications | |
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Appearance (clearness) | clear |
Appearance (colour) | red |
Solidification behaviour (4 hrs., 45 °C) | liquid |
pH-value (25 °C) | 7.2 - 7.6 |
Typical composition (g/litre): Peptone from gelatine 7.0; Yeast extract 3.0; Sodium chloride 5.0; D(+)Glucose 10.0; Bile salt mixture 1.5; Neutralred 0.03; Crystal violet 0.002; Agar-agar 13.0. | |
Growth promotion test in accordance with the current version of harmonised method of EP, USP and JP. | |
Inoculum on reference medium (Escherichia coli ATCC 8739 (WDCM 00012)) | 10 - 100 |
Inoculum on reference medium (Pseudomonas aeruginosa ATCC 9027 (WDCM 00026)) | 10 - 100 |
Inoculum (Staphylococcus aureus ATCC 6538 (WDCM 00032)) | ≥ 10000 |
Inoculum (Bacillus cereus ATCC 11778 (WDCM 00001)) | ≥ 10000 |
Colony count (Escherichia coli ATCC 8739 (WDCM 00012)) | |
Colony count (Pseudomonas aeruginosa ATCC 9027 (WDCM 00026)) | |
Recovery on test medium (Escherichia coli ATCC 8739 (WDCM 00012)) | 50 - 150 % |
Recovery on test medium (Pseudomonas aeruginosa ATCC 9027 (WDCM 00026)) | 50 - 150 % |
Colony colour (Escherichia coli ATCC 8739 (WDCM 00012)) | red colonies |
Colony colour (Pseudomonas aeruginosa ATCC 9027 (WDCM 00026)) | nearly colourless to slightly red colonies |
Precipitate (Escherichia coli ATCC 8739 (WDCM 00012)) | + |
Growth (Staphylococcus aureus ATCC 6538 (WDCM 00032)) | no growth |
Growth (Bacillus cereus ATCC 11778 (WDCM 00001)) | no growth |
Incubation: up to 18 hours at 30-35°C aerobic Staphylococcus aureus and Bacillus cereus at least 24 hours. Reference medium: Tryptic Soy Agar |
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Growth promotion test in accordance with the current version of DIN EN ISO 11133. | |
Inoculum on reference medium (Escherichia coli ATCC 8739 (WDCM 00012)) | |
Inoculum on reference medium (Escherichia coli ATCC 25922 (WDCM 00013)) | |
Inoculum on reference medium (Salmonella typhimurium ATCC 14028 (WDCM 00031)) | |
Inoculum on reference medium (Salmonella enteritidis ATCC 13076 (WDCM 00030)) | |
Colony count (Escherichia coli ATCC 8739 (WDCM 00012)) | |
Colony count (Escherichia coli ATCC 25922 (WDCM 00013)) | |
Colony count (Salmonella typhimurium ATCC 14028 (WDCM 00031)) | |
Colony count (Salmonella enteritidis ATCC 13076 (WDCM 00030)) | |
Recovery on test medium (Escherichia coli ATCC 8739 (WDCM 00012)) | ≥ 50 % |
Recovery on test medium (Escherichia coli ATCC 25922 (WDCM 00013)) | ≥ 50 % |
Recovery on test medium (Salmonella typhimurium ATCC 14028 (WDCM 00031)) | ≥ 50 % |
Recovery on test medium (Salmonella enteritidis ATCC 13076 (WDCM 00030)) | ≥ 50 % |
Colonies (Escherichia coli ATCC 8739 (WDCM 00012)) | Pink to red colonies with or without precipitation halo |
Colonies (Escherichia coli ATCC 25922 (WDCM 00013)) | Pink to red colonies with or without precipitation halo |
Colonies (Salmonella typhimurium ATCC 14028 (WDCM 00031)) | Pink to red colonies with or without precipitation halo |
Colonies (Salmonella enteritidis ATCC 13076 (WDCM 00030)) | Pink to red colonies with or without precipitation halo |
Growth (Enterococcus faecalis ATCC 29212 (WDCM 00087)) | total inhibition |
Growth (Enterococcus faecalis ATCC 19433 (WDCM 00009)) | total inhibition |
Incubation: 24 ± 2 hours at 37 ± 1 °C 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. Reference medium: Tryptic Soy Agar |
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The information above is current at this time of publication and is subject to change without notice (except for customers holding a change control agreement with our company). The information/format can be altered at any time and inany way if internal company matters or Standard Regulationsdo say so. |