MERCK 105406.0500 Baird-Parker Agar Staphylococcus Selective Agar (Base) Acc. To Baird-Parker For Microbiology
| Specifications |
|---|
| Appearance (clearness) | clear to turbid |
| Appearance (color) | yellowish-brown |
| pH-value (25 °C) | 6.6 - 7.0 |
| 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 (Staphylococcus aureus ATCC 6538 (WDCM 00032)) | |
| Inoculum on reference medium (Staphylococcus aureus ATCC 25923 (WDCM 00034)) | |
| Colony count (Staphylococcus aureus ATCC 6538 (WDCM 00032)) | |
| Colony count (Staphylococcus aureus ATCC 25923 (WDCM 00034)) | |
| Recovery on test medium (Staphylococcus aureus ATCC 6538 (WDCM 00032)) | ≥ 50 % |
| Recovery on test medium (Staphylococcus aureus ATCC 25923 (WDCM 00034)) | ≥ 50 % |
| Growth (Escherichia coli ATCC 8739 (WDCM 00012)) | total inhibition |
| Growth (Escherichia coli ATCC 25922 (WDCM 00013)) | total inhibition |
| Growth (Staphylococcus saprophyticus ATCC 15305 (WDCM 00159)) | no limit |
| Growth (Staphylococcus epidermidis ATCC 12228 (WDCM 00036)) | no limit |
| Growth (Enterococcus hirae ATCC 8043 (WDCM 00089)) | no limit |
| Growth (Proteus mirabilis ATCC 29906 (WDCM 00023)) | no limit |
| Colonies (Staphylococcus aureus ATCC 6538 (WDCM 00032)) | Black or grey colonies with clear halo |
| Colonies (Staphylococcus aureus ATCC 25923 (WDCM 00034)) | Black or grey colonies with clear halo |
| Colonies (Staphylococcus saprophyticus ATCC 15305 (WDCM 00159)) | Black or grey colonies without clear halo |
| Colonies (Staphylococcus epidermidis ATCC 12228 (WDCM 00036)) | Black or grey colonies without clear halo |
| Colonies (Enterococcus hirae ATCC 8043 (WDCM 00086)) | Black or grey colonies without clear halo |
| Colonies (Proteus mirabilis ATCC 29906 (WDCM 00023)) | Brown or black colonies without clear halo |
| Incubation:Staphylococcus aureus 24 ± 2 hours at 34 - 38 °C aerobicother teststrains 48 ± 4 hours at 34 - 38 °C aerobicA 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 media: Tryptic Soy Agar |
| Inoculum on reference medium (Staphylococcus aureus ATCC 6538 (WDCM 00032)) | 10 - 100 |
| Colony count (Staphylococcus aureus ATCC 6538 (WDCM 00032)) | |
| Recovery on test medium (Staphylococcus aureus ATCC 6538 (WDCM 00032)) | 50 - 150 % |
| Colony color (Staphylococcus aureus ATCC 6538 (WDCM 00032)) | black colonies with clear zone |
| Inoculum on reference medium (Escherichia coli ATCC 8739 (WDCM 00012)) | ≥ 100 |
| Growth(Escherichia coli ATCC 8739 (WDCM 00012)) | no growth |
| Incubation:Staphylococcus aureus ≤ 24 hours at 32,5 °C ± 2,5 °C aerobicEscherichia coli ≥ 48 hours at 32,5 °C ± 2,5 °C aerobicReference media: Tryptic Soy Agar |
