STN EN ISO 5815-1
| Označenie: | STN EN ISO 5815-1 |
| Platnosť: | Zrušená |
| Počet strán: | 34 |
| Jazyk: |
EN
|
| Listinná verzia: | 17,20€ |
| Elektronická verzia: |
a) Bez možnosti tlače, prenosu textu a obrázkov:
15,48€ b) Bez možnosti tlače, s prenosom textu a obrázkov: 17,20€ c) S možnosťou tlače, prenosu textu a obrázkov: 22,36€ |
| Slovenský názov: | Kvalita vody. Stanovenie biochemickej spotreby kyslíka po n dňoch (BODn). Časť 1: Zrieďovacia a očkovacia metóda s prídavkom alyltiomočoviny (ISO 5815-1: 2019) |
| Anglický názov: | Water quality - Determination of biochemical oxygen demand after n days (BODn) - Part 1: Dilution and seeding method with allylthiourea addition (ISO 5815-1:2019) |
| Dátum vydania: | 01. 01. 2020 |
| Dátum zrušenia: | 01. 10. 2020 |
| ICS: | 13.060.50 |
| Triediaci znak: | 75 7369 |
| Úroveň zapracovania: | idt EN ISO 5815-1:2019, idt ISO 5815-1:2019 |
| Vestník: | 12/19 |
| Zmeny: | |
| Nahradzujúce normy: | STN EN ISO 5815-1:2020-10 (75 7369) |
| Nahradené normy: | STN EN 1899-1:2001-11 (75 7369) |
| Poznámka vo Vestníku: | Rozpracované prekladom. |
| Predmet normy: | This document specifies the determination of the biochemical oxygen demand of waters by dilution and seeding with suppression of nitrification after 5 d or 7 d incubation time. It is applicable to all waters having biochemical oxygen demands usually between 1 mg/l and 6 000 mg/l. It applies particularly to waste waters but also suits for the analysis of natural waters. For biochemical oxygen demands greater than 6 000 mg/l of oxygen, the method is still applicable, but special care is needed taking into consideration the representativeness of subsampling for preparation of the dilution steps. The results obtained are the product of a combination of biochemical and chemical reactions in presence of living matter which behaves only with occasional reproducibility. |
| Náhľad normy: | Náhľad normy (PDF) |