The NELAC Institute Accreditation


The Wisconsin State Laboratory of Hygiene has maintained National Environmental Laboratory Accreditation Program (NELAP) accreditation since April 1, 2001. The laboratory’s current scope of accreditation can be accessed through the links below. NELAP is a national program designed to bring uniformity and consistency to the process used in accrediting environmental testing laboratories.

More information about NELAP and TNI

icon-pdfLaboratory Certificate

icon-pdfLaboratory Scope of Accreditation

icon-pdfTNI Quality Assurance Manual – EHD DIV-WIDE PLAN 001, Quality Assurance Manual—General, contains general information that applies to all sections and testing covered by this manual. Each section then has a supplemental plan (e.g. EHD INORG PLAN 001) that contains information specific to that section. To request section-specific plans, please contact