STN EN ISO 5815-1
| Name: | STN EN ISO 5815-1 |
| Validity: | Withdrawn |
| Number of pages: | 34 |
| Language: |
EN
|
| Hard copy: | 17,20€ |
| Electronic version |
a) Only read (without ability to print and copy)
15,48€ b) Without ability to print, with ability to copy (printscreen) 17,20€ c) With ability to print and copy (printscreen) 22,36€ |
| Slovak title | Kvalita vody. Stanovenie biochemickej spotreby kyslíka po n dňoch (BODn). Časť 1: Zrieďovacia a očkovacia metóda s prídavkom alyltiomočoviny (ISO 5815-1: 2019) |
| English title | Water quality - Determination of biochemical oxygen demand after n days (BODn) - Part 1: Dilution and seeding method with allylthiourea addition (ISO 5815-1:2019) |
| Release Date: | 01. 01. 2020 |
| Date of withdrawal: | 01. 10. 2020 |
| ICS: | 13.060.50 |
| Sorting character/National clasification code | 75 7369 |
| Level of incorporation: | idt EN ISO 5815-1:2019, idt ISO 5815-1:2019 |
| Official Journal | 12/19 |
| Amendments | |
| Replaced by: | STN EN ISO 5815-1:2020-10 (75 7369) |
| Repleces: | STN EN 1899-1:2001-11 (75 7369) |
| Note in Official Journal: | Rozpracované prekladom. |
| Subject of the standard: | 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. |
| Preview: | Náhľad normy (PDF) |