NS EN 1899-1 : 1ED 1998
Withdrawn
WATER QUALITY - DETERMINATION OF BIOCHEMICAL OXYGEN DEMAND AFTER N DAYS (BODN) - PART 1: DILUTION AND SEEDING METHOD WITH ALLYLTHIOUREA ADDITION
01-12-2013
12-01-2019
Foreword
Introduction
1 Scope
2 Normative references
3 Definition
4 Principle
5 Reagents
6 Apparatus
7 Storage of the sample
8 Procedure
9 Calculation and expression of results
10 Trueness and precision
11 Special cases
12 Test report
Annex A (normative) Alternative incubation periods
Annex B (informative) Multitesting
Defines a determination of the biochemical oxygen demand of waters by diluting and seeding with suppression of nitrification. Applies to all waters with biochemical oxygen demands in excess of or equal to the limit of determination 3 mg/l of oxygen and not in excess of 6000mg/l of oxygen.
| DevelopmentNote |
Supersedes NS 4749. (05/2002)
|
| DocumentType |
Standard
|
| PublisherName |
Norwegian Standards (Norges Standardiseringsforbund)
|
| Status |
Withdrawn
|
| Supersedes |
| Standards | Relationship |
| BS EN 1899-1:1998 | Identical |
| EN 1899-1:1998 | Identical |
| NF EN 1899-1 : 1998 | Identical |
| I.S. EN 1899-1:1998 | Identical |
| UNE-EN 1899-1:1998 | Identical |