National Voluntary Laboratory Accreditation Program (NVLAP) is a
National Institute of Standards and Technology (NIST) program in the USA which provides an unbiased third-party test and evaluation program to accredit laboratories in their respective fields to the
ISO/IEC 17025 standard. NVLAP is in compliance with ISO/IEC 17011.
Accredited laboratories
Calibration
Dimensional
Electromagnetics - DC low frequency
Electromagnetics - RF/microwave
Ionizing radiation
Mechanical
Optical radiation
Thermodynamic
Time and frequency
Chemical calibration
Chemical calibration: providers of proficiency testing
Chemical calibration: certifiers of spectrophotometric NTRMs
Dosimetry
Ionizing radiation dosimetry
Reverse osmosis with applied heat during deionization.
Electromagnetic compatibility and telecommunications