Laboratory Certification
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NR 149 Code Updates
An update to administrative code, chapter NR 149, has been completed. This update was published on March 1, 2021. The effective date is June 29, 2021. NR 149 - June 2021 On March 19, 2021, Brandy Baker-Muhich provided a Webinar on how this new…
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Method Detection Limit (MDL)
"Method detection limit," or "MDL," means the minimum measured concentration of a substance that can be reported with 99% confidence that the measured concentration is distinguishable from method blank results. The MDL is generated according to the…
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Analyte Groups
"Analyte group" means a set of analytes that can be determined using the same method or technology and that constitutes a unit, acknowledged by the department, of the third tier of accreditation under s. NR 149.13 (4).The selection of an analyte…
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Annual Certification and Registration Renewal
Once your laboratory becomes certified or registered with the Wisconsin DNR Laboratory Accreditation Program, you will need to complete the following two tasks each year.
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Lab of the Year Awards
Each year, the Laboratory Accreditation Program recognizes a laboratory for its outstanding commitment to producing high quality data by presenting this award. Nominees must be laboratories located in Wisconsin. Nominations may be made by anyone…
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Resources and assistance for Laboratories
Outreach is a critical component of the Laboratory Certification and Registration Program. We have compiled a list of forms, benchsheets, guidance documents, method references and training presentations to assist you in generating quality analytical…
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Laboratory certification & registration program
The Wisconsin Department of Natural Resources (DNR) Laboratory Certification Program was created in 1986 to help ensure that laboratories submit reliable and consistent data to the department's various environmental programs. The program currently…
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Laboratory Certification Standards Review Council
The Laboratory Certification Standards Review Council is created under s. 15.107 (12), Wis. Stats. and generally meets quarterly each calendar year.Next meetingDate:Tuesday, April 22, 2025Time:9:00 a.m. to end of agendaLocation:In-person Option
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PFAS certification
The Wisconsin Department of Natural Resources is offering certification for PFAS in drinking water (potable water), aqueous (non-potable water), and non-aqueous matrices.Labs that currently hold WI DNR PFAS certification can be found here: WI PFAS…