Cetrimid-Agar nach harm. EP/USP/JP
| Shorthand symbol: | CNA |
| Item number: | 40-1024 |
| Format: | Petri dish, 90mm |
| Colour: | Light beige, transparent |
| Storage conditions: | Dry, closed at 4-10°C |
| Shelf-life: | 3 Months |
| pH: | 7.2 ± 0.2 at 25°C |
The cetrimide agar serves as a test for Pseudomonas aeruginosa. The medium is used for testing non-sterile products. It complies with the recommendations of the harmonization according to EP / USP / JP (2006).
| in g per 1l medium | |
|---|---|
| Pancreatic hydrolyzate from gelatin | 20 |
| Magnesium chloride | 1.4 |
| Potassium sulphate | 10 |
| Cetrimide | 0.3 |
| Glycerol | 10 |
| Agar | 13.6 |
| *Adjusted as required to meet performance standards. |
The microbial performance test is carried out in conformity with the requirements of DIN EN ISO 11133 and the Pharm. Eur. (Microbiological testing of non-sterile products according to Chapter 2.6.13).
Productivity
Incubation conditions: 44 ± 4 hours at 36 ± 2 °C; Inoculum concentration: 80 – 120 CFU
| Organism | Test strain | Specification | Colony morphology | |
|---|---|---|---|---|
| Pseudomonas aeruginosa | ATCC 9027 / WDCM 00026 | 50 – 130 % / good growth | White-yellowish to green, translucent flourescence colonies under UV-Light(360 ± 20 nm) |
Selectivity
Incubation conditions: 44 ± 4 hours at 36 ± 2 °C; Inoculum concentration: 10.000 – 1.000.000 CFU
| Organism | Test strain | Specification | Colony morphology | |
|---|---|---|---|---|
| Escherichia coli | ATCC 8739 / WDCM 00012 | Complete Inhibition | - |
Microbial contamination
Incubation conditions: 5 – 7 days at 20 – 25 °C and 5 – 7 days at 30 – 35 °C
| Specification |
|---|
| No microbial contamination |