ANSI Z136.4 (2010) Recommended Practice for Laser Safety Measurements for Hazard Evaluation
ISBN# 978-0-912035-78-9

Newly Revised!


All electronic documents of the American National Standards Institute (ANSI) Z136 series of laser safety standards are sold on the ANSI eStandards Store. LIA only sells the soft bound versions of these Standards. To order the electronic versions from ANSI, click on the link at the bottom of the page.

This Recommended Practice provides guidance for optical measurements associated with laser safety requirements. The information contained in this document is intended to assist users who are entrusted with the responsibility of conducting laser hazard evaluations to ensure that appropriate control measures are implemented. It contains clearly written definitions, examples, and other practical information for manufacturers, laser safety officers, technicians, and other trained laser users.

This revision of the original 2005 standard harmonizes with the revised ANSI Z136.1 – 2007 Safe Use of Lasers standard, parent document and cornerstone of the ANSI Z136 laser safety standards series and the foundation of laser safety programs nationwide. Other changes include the addition of many new important terms and definitions as well as revised definitions from the 2005 standard. Significant revisions can also be seen in updated figures, tables and charts as well as revised and new sections throughout the standard.


The standard is available in paperback or searchable electronic versions. (soft bound, 126 pgs.)


Intended to be used in conjunction with the ANSI Z136.1. To order the set see above.

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