STN EN 17716
| Označenie: | STN EN 17716 |
| Platnosť: | Platná |
| Počet strán: | 24 |
| Jazyk: |
EN
|
| Listinná verzia: | 14,10€ |
| Elektronická verzia: |
a) Bez možnosti tlače, prenosu textu a obrázkov:
12,69€ b) Bez možnosti tlače, s prenosom textu a obrázkov: 14,10€ c) S možnosťou tlače, prenosu textu a obrázkov: 18,33€ |
| Slovenský názov: | Rastlinné biostimulátory. Stanovenie Escherichia coli |
| Anglický názov: | Plant biostimulants - Determination of Escherichia coli |
| Dátum vydania: | 01. 03. 2025 |
| Dátum zrušenia: | |
| ICS: | 65.080 |
| Triediaci znak: | 46 5617 |
| Úroveň zapracovania: | idt EN 17716:2024 |
| Vestník: | 02/25 |
| Zmeny: | |
| Nahradzujúce normy: | |
| Nahradené normy: | STN P CEN/TS 17716:2022-07 (46 5617) |
| Poznámka vo Vestníku: | |
| Predmet normy: | This document gives guidance for the detection and identification of the specified microorganism Escherichia coli in technical and formulated plant biostimulants, both in liquid and solid states, and also the horizontal method for the enumeration of ß-glucuronidase-positive E. coli in plant biostimulants (both in liquid and solid states). The qualitative method described in this document is based on the detection of E. coli in a non-selective liquid medium (enrichment broth), followed by isolation on a selective agar. Other methods can be appropriate, depending on the level of detection required. NOTE 1 For the detection of E. coli, subcultures can be performed on non-selective culture media followed by suitable identification steps (e.g. using identification kits). The quantitative method described in this document uses a colony-count technique at 44 °C ± 1 °C on a solid medium containing a chromogenic ingredient for detection of the enzyme ß-glucuronidase. NOTE 2 Strains of E. coli which do not ... |
| Náhľad normy: | Náhľad normy (PDF) |