The National Voluntary Laboratory Accreditation Program (NVLAP), administered by the National Institute of Standards and Technology (NIST) in USA, offers accreditation for testing and calibration laboratories across various fields. NVLAP evaluates laboratories' technical qualifications and compliance with standards like ISO/IEC 17025. The accreditation process includes application submission, an on-site assessment, proficiency testing, and addressing any identified nonconformities. NVLAP’s accreditation is recognized internationally, indicating a laboratory’s competence but not certifying its performance. NVLAP’s mission is to deliver high-quality accreditation services and promote global acceptance of accredited results.
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