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On-Site Assessment Forms

What's on this page?

This page provides links to the forms that are used by a NVLAP assessor to record the results of a laboratory's on-site assessment. These forms constitute the "On-Site Assessment Report."

Assessors use checklists to ensure that each laboratory receives an assessment comparable to that received by others. All NVLAP programs use the NIST Handbook 150 Checklist, which contains the requirements published in NIST Handbook 150. The NIST Handbook 150-xx series checklists (Program-Specific Checklists) address requirements that are specific to a particular field of accreditation.

The Test Method Review Summary, used in conjunction with the checklists in most testing programs, is a tool for capturing information about the test methods assessed at a laboratory and the extent of the assessment. For each test method, the assessor records the depth of the assessment and other pertinent information.

Please read the Instructions to the Assessor (see below) and check here frequently for new or revised forms. Unless marked otherwise, each form listed is the latest controlled version.

Document file formats

Documents marked as "PDF" can be viewed and printed using Adobe Reader software from Adobe Systems Inc. You may download this software without charge from the Adobe web site.

Documents marked as "Word" have been enabled for electronic input using Microsoft Word. For help with using these forms, visit our link at Tips for Working with Microsoft Word Forms.

Microsoft Office and Adobe Reader software applications are identified in order to assist users of this web site. In no case does such identification imply recommendation or endorsement by the National Institute of Standards and Technology. If you are unable to use this software and require a copy of a listed document, please request a hard copy from NVLAP [at] (NVLAP[at]nist[dot]gov), or call NVLAP at 301-975-4016.

On-Site Assessment Forms

File Format

Revision Date

NVLAP General Criteria Checklist (ISO/IEC 17025:2017)

Contact NVLAP to obtain this checklist

On-Site Signature Sheet with Narrative *  
  • Full ISO/IEC 17025 form
  • Abbreviated form 
On-Site Assessment Summary *Word2022-07-20
Test Method Review SummaryExcel2022-12-07
* Required for all programs in addition to the appropriate program-specific forms.
Program-Specific Checklists - See NIWS Assessor portal for latest editions of program checklists.
Created September 23, 2010, Updated March 29, 2024