National Institute of Standards and Technology
  National Voluntary Laboratory Accreditation Program (NVLAP)

Welcome to the
NVLAP Interactive Web System (NIWS)

This portal is a secure on-line tool that enables your organization to apply for or renew your laboratory's NVLAP accreditation and keep relevant accreditation records up to date.

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Test Method & Calibration Parameters
Lab Portal Login
Assessor Portal Login
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