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Apply for NVLAP Accreditation


A laboratory may apply for accreditation in any of the NVLAP Accreditation Programs listed on this page. Accreditation is available to public and private testing and calibration laboratories, including commercial laboratories; manufacturers' in-house laboratories; university laboratories; and federal, state, and local government laboratories. A laboratory located outside the United States may be accredited if it meets the same requirements as domestic laboratories and pays the additional expenses associated with the on-site assessment.

Information required to complete the application process includes general information about the laboratory, contact information, management system documentation, requested scope of accreditation, and payment information. An applicant laboratory must designate an Authorized Representative to commit the laboratory to fulfill the NVLAP Conditions for Accreditation (see NIST Handbook 150, Annex C).

Requirements documents

Each applicant should thoroughly review the NVLAP accreditation requirements in NIST Handbook 150, NVLAP Procedures and General Requirements before applying for accreditation. NIST Handbook 150 presents the basic procedures under which NVLAP operates and the general requirements for accreditation of testing and calibration laboratories.

NVLAP also publishes Program-Specific Handbooks containing the procedures and technical requirements that are specific to a particular accreditation program. These handbooks are published as part of the NIST Handbook 150 series and supplement the information contained in NIST Handbook 150.

Additional information about a specific laboratory accreditation program (LAP) may be viewed by clicking on the name of the program in the list at the right.

How to apply

A laboratory may apply for accreditation using the forms published on the respective LAP webpages. Click on the program of interest (see list at the right) to be directed to that program's webpage. Requirements documents and application forms may be viewed and printed using Adobe Reader, available for free from the Adobe web site.


The NVLAP Interactive Web Site (NIWS) is under construction.

Exciting changes are taking place here at NVLAP. We will soon announce the availability of the new NVLAP Information System Lab Portal. This web-based system will allow laboratories to submit their applications and transact other business electronically, such as notifying NVLAP of contact and address changes, requesting changes to scopes of accreditation, and uploading laboratory documents.

NVLAP will begin using the NVLAP Lab Portal in the next several weeks and will notify laboratories when this becomes effective.

NVLAP appreciates your feedback as we roll out new and improved services. Please feel free to contact us if you have questions or suggestions (e-mail:; phone: 301-975-4016.

Fee calculation and payment

An applicant laboratory (new or renewal) may remit payment by check, purchase order, wire payment, or credit card (via The fees for accreditation are published at NVLAP Fee Structure.

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Inquiries related to applications should be directed to the Program Manager of the program of interest. See the Staff Directory to view the current list of NVLAP Program Managers and their contact information.

For general inquiries:

301-975-4016 Telephone
301-926-2884 Facsimile

100 Bureau Drive, M/S 2140
Gaithersburg, MD 20899-2140