Nähragar nach TrinkwV und § 64 LFGB (NTV)
Equivalent to the Drinking Water Regulation and §64 LFGB (formerly § 35 LMBG) and the DIN EN ISO 12780
| Shorthand symbol: | NTV |
| Item number: | 40-1176 |
| Format: | Petri Dish, 90mm |
| Colour: | ivory-coloured |
| Storage conditions: | Dry, in closed bag, at 15-22°C |
| Shelf-life: | 4 Months |
| pH: | 7.4 ± 0.2 bei 25°C |
Universal Nutrient Medium for the isoation and cultivation of fastidious microorganisms according to Drinking Water Regulations and § 64 LFGB (formerly § 35 LMBG). The nutrient medium formualtion is according to DIN EN ISO 12780.
| in g per 1 Litre Nutrient Medium | |
|---|---|
| Peptone | 5 |
| Meat Extract | 1 |
| Yeast Extract | 2 |
| Sodium Chloride | 5 |
| Agar | 12 |
| *Adjusted as required to meet performance standards |
The Microbiological Performance Test is carried out in accordance with the requirements of DIN EN ISO 11133.
Productivity
Incubation Conditions: 44±4 Hours at 36±2°C; Inoculum Concentration: 80–120 CFU
| Organism | Type Strain | Specification | Colony morphology | |
|---|---|---|---|---|
| Escherichia coli | ATCC 8739/WDCM 00012 | >70% | - | |
| Bacillus subtilis | ATCC 6633/WDCM 00003 | >70% | - |
Microbial Contamination
Incubation Conditions: 5–7 Days, 20–25°C and 5–7 Days, 30–35°C
| Specification |
|---|
| No microbial contamination |