Laboratory Certification
- Webpage
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…
- Webpage
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…
- Webpage
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.
- Webpage
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 with…
- Webpage
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
- Webpage
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…
- Webpage
BOD Toxicity
Sample toxicity Often referred to as "sliding" BODs BOD decreases as sample volume increases (i.e., less dilute) Occurs frequently in systems receiving industrial waste Amounts to killing off (or severe shock to) "the bugs" Results in under-…
- Webpage
BOD seed
Seed preparation and addition De-ionized water kills - Adding a seed capsule to deionized water causes an osmotic imbalance that will kill seed organisms. The purified water —containing no salts— rushes across the bacterial cell walls. The bacteria…