Featured Product: ISA is proud to announce that the American National Standards Institute (ANSI) has approved the new ANSI Z133-2026: Safety and Health Requirements for Arboricultural Operations and the publication is now available through the ISA Store as of 27 May, 2026. The 2026 revision provides the most current criteria in the United States for arborists and other workers engaged in arboricultural operations, and it details requirements for a variety of tree care-related areas.
The Z133-2026 standard is available in English and Spanish, both in print and digitalformats. The digital version can be downloaded for free, thanks to support from ISA Canopy Partner organizations and corporate licensing fees. Print copies are also available for purchase through ISA and other authorized resellers. Click here to learn more about purchasing options.
