WLN B.V.
Rijksstraatweg 85, 9756 AD, GLIMMEN, Netherlands
- Accredited standards
- 24
- RvA certificate
- 1
- Site in our directory
- 1
What this lab is accredited for
Our reading of the RvA scope: each standard once, with its official name where we have checked it.
Only this lab. Searches the 24 standard numbers and the 18 official names we hold. When no standard matches, it searches the method text of every scope line.
ISO16
ISO 5667-5Water quality - Sampling - Part 5: Guidance on sampling of drinking water from treatment works and piped distribution systems
ISO 5667-11Water quality - Sampling - Part 11: Guidance on sampling of groundwaters
ISO 5815-1Water quality - Determination of biochemical oxygen demand after n days (BODn) - Part 1: Dilution and seeding method with allylthiourea addition
ISO 6878Water quality - Determination of phosphorus - Ammonium molybdate spectrometric method
ISO 7027-1Water quality - Determination of turbidity - Part 1: Quantitative methods
ISO 7393-1Water quality - Determination of free chlorine and total chlorine - Part 1: Titrimetric method using N,N-diethyl-1,4-phenylenediamine
ISO 7888Water quality - Determination of electrical conductivity
ISO 10304-1Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
ISO 10523Water quality - Determination of pH
ISO 10705-2Water quality - Detection and enumeration of bacteriophages - Part 2: Enumeration of somatic coliphages
ISO 11731Water quality - Enumeration of Legionella
ISO 14403-2Water quality - Determination of total cyanide and free cyanide using flow analysis (FIA and CFA) - Part 2: Method using continuous flow analysis (CFA)
ISO 15705Water quality - Determination of the chemical oxygen demand index (ST-COD) - Small-scale sealed-tube method
ISO 15923-1Water quality - Determination of selected parameters by discrete analysis systems - Part 1: Ammonium, nitrate, nitrite, chloride, orthophosphate, sulfate and silicate with photometric detection
ISO 17289Water quality - Determination of dissolved oxygen - Optical sensor method
ISO 19458Water quality - Sampling for microbiological analysis
NEN6
NEN 6254
NEN 6414
NEN 6491
NEN 6600-2
NEN 6600-3
NEN 6645
Other standards2
EN 1484Water analysis - Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)
EN 1899-2Water quality - Determination of biochemical oxygen demand after n days (BODn) - Part 2: Method for undiluted samples
NEN 6600-3, NEN-ISO 5667-5
EN ISO/IEC 17025:2017; NEN-EN-ISO 19458; NEN-EN-ISO 11731; NEN-ISO 5667-5; ISO 5667-11; NEN 6600-2; NEN 6414; NEN-EN-ISO 7393-1
EN ISO/IEC 17025:2017; NEN-ISO 10523; NEN-ISO 7888; NEN-EN-ISO 10523; NEN-EN 1899-2; NEN-EN-ISO 5815-1; NEN ISO 17289; NEN 6491; NEN-EN-ISO 15923-1; NEN 6645; NEN-ISO 15705
EN ISO/IEC 17025:2017; NEN-EN-ISO 7027-1; NEN-ISO 15923-1; NEN-EN-ISO 6878; NEN-EN-ISO 14403-2; NEN-EN 1484
NEN-EN-ISO 10304-1
EN ISO/IEC 17025:2017; NEN-EN-ISO 10705-2
NEN 6254+C1
Read from the RvA scope document we downloaded on 2026-02-11. Register refreshed 2026-11-08.
Scope as published by RvA
12 lines
ISO/IEC 17025
ActiveL075
The scope document we hold says it is valid until 2029-12-01.
Location
Accreditation data refreshed from the RvA register on .
This page mirrors a public register. For a purchasing, audit or regulatory decision, confirm against the RvA entry linked above.