We offer one-stop-shopping for manuals and procedures for accredited laboratories. Our goal is for labs to have access to the most current quality-control tools and to receive rule updates to help Washington's labs maintain high-quality analyses.
Gain access to procedural guides, refer to the Laboratory Accreditation rule, look up analytical methods and method codes, and learn about proficiency testing and sample providers for environmental laboratories.
Receive your lab code
An EPA lab identification code is necessary for accreditation and for proficiency test reporting. If your lab is located in Washington, please call our office at 360-871-8800 for instructions on how to receive your lab code. If your lab is not located in Washington, please call the EPA Regional office for the state in which your lab is located.
Lab quality assurance manuals are required
Download quality-control tools
Bench sheets and control charts for labs offers downloadable spreadsheet tools and guidance for labs.