Safety Glasses with ANSI Z87.1 markings on the lens

ANSI Z87.1 Defined

The American National Standards Institute (ANSI) is a nonprofit organization with a primary mission to: Enhance the global competitiveness of U.S. business and the U.S. quality of life by promoting and facilitating voluntary consensus standards and conformity assessment systems and safeguarding their integrity.

In other words, ANSI creates uniform testing standards and guidelines for various products, and equipment businesses use in nearly every sector.

The Z87.1 portion of ANSI standards references the standards for Occupational and Educational Personal Eye and Face Protection Devices. These standards help ensure that personal eye and face protection devices provide the necessary protection from impact, non-ionizing radiation, and liquid splash exposures.

ANSI Z87.1 General Requirements

The ANSI Z87.1 certification provides a system organized based on encountered hazards. With this standard, the choice of safety eyewear revolves around what best represents the protection needed for the specific hazards encountered in the workplace. The most common hazards are:

  • Blunt impact
  • Radiation
  • Splashes and droplets
  • Dust
  • Small particles
ANSI High Mass and High Velocity Impact Tests Descriptions

The Z87.1 standard uses high mass and high-velocity impact tests, among others.

Most safety eyewear manufacturers provide packaging and information indicating how products meet ANSI Z87.1 standards. Also allowed under the standard are prescription safety lenses if they meet high-impact testing requirements.

ANSI Z87.1 2020 Update

Past updates to the ANSI Z87.1 standard have focused on product performance and harmonizing with International Safety Equipment (ISEA) standards. They’ve made it easier for users to select the appropriate safety gear based on the potential hazards and complications their environment produces. The 2015 update also clearly defined UV radiation and addressed issues related to emerging technologies.

The Z87.1 2020 update also addresses product innovations and continues ANSI's focus on product performance and harmonizing with ISEA standards. It emphasizes the importance of wearing the right protection for the specific job performed or “matching the protector to the hazard.”

Since the 2015 update, the ANSI/ISEA Z87.1-2020 standards underwent the following changes:

  • Criteria and requisite markings for protectors now offer relaxed optics as an option.
  • Testing, performance, and marking criteria for anti-fog lenses were added to minimize potential harm created by workers removing or adjusting protective eyewear because of fogging lenses.
  • Transmittance allowances were changed.
  • Welding filter shades were expanded, and the updated standard addresses the new and innovative product designs offering additional protection and enhanced benefits.
  • Clarifications were added to promote consistency in testing dark-state tolerances for automatic darkening welding filters and determining the minimum coverage-age area concerning the specified headform.

For more information on past revisions, see ANSI Z87.1 Eye and Face Protection Devices Standard. For the full 2020 update, read the complete ANSI-ISEA Z87.1-2020 Standard.

ANSI Z87.1 Testing Processes

Edge Eyewear ANSI Z87.1 High Mass Impact and Penetration Test descriptions

ANSI Z87.1-certified eyewear must pass a high mass impact and lens penetration test.

Safety eyewear undergoes intensive testing to ensure it meets ANSI Z87.1 standards and protects your eyes as expected. Tests include:

  • Basic and high-impact for lenses and frames.
  • Exposure to non-ionizing radiation and chemicals.
  • Durability to flammables and corrosion.

Edge Eyewear gives An Inside Look at Testing for High Impact Compliance to help understand impact testing processes. After seeing how badly non-safety-rated eyewear fails these basic tests, you'll want to purchase only ANSI-Z87.1-rated eyewear.

ANSI Z87.1 Product Markings

Z87.1 Lens Mark Example

New marking standards require manufacturers to label lenses with certain specifications.

The ANSI Z87.1 standard requires efficient and easy-to-understand lens and frame markings. These markings, listed below, make the selection process more straightforward and increase compliance.

  • Z87+ is a high-velocity impact rating
  • Z87 alone is the basic impact rating
  • D3 indicates splash and droplet protection
  • D4 indicates protection from dust particles
  • D5 indicates protection from fine dust
  • W plus a shade number shows the level of welding protection
  • U plus a scale number shows the level of UV protection
  • R plus a scale number shows the level of infrared light protection
  • L plus a scale number shows the visible light filter
  • Z87-2 on the front of the frame and both temples indicates prescription eyewear
  • H indicates a product designed for smaller head sizes
  • V indicates photochromic lenses
  • S indicates a special lens tint
  • X indicates eyewear has passed the fog test and can resist fogging

Rx Spectacle Ratings

  • Manufacturer’s mark or logo on frame or lens
  • + symbol on lenses indicates they’re impact rated
  • Z87-2+ on the frame.
  • Z87+ on detachable side shields if equipped

Prescription frames also require size markings on frames and temples, and all safety markings for ANSI Z87.1-2020 safety eyewear must be permanently and clearly marked on frames or lenses. This marking requirement includes goggles, face shields, and safety glasses.

Product Marking Example

Z87.1 Markings On Lens

Example of Z87.1 lens marking specifications.

The image above shows a pair of Bolle Safety Glasses with ANSI Z87.1-2020 product marking requirements.

  • Z87+ indicates eyewear meets the high-velocity impact requirement.
  • U6 means the eyewear has a UV rating of 6, the highest rating
  • S indicates a special lens tint because these glasses feature Bolle's ESP lens

You may encounter safety eyewear with only Z87 or the manufacturer’s mark with a + stamped on the lens or frame. These products were produced before or after the 2010 standard and are still safe to use. They still meet ANSI Z87.1 high-velocity impact safety standards but don't have updated product marking requirements.

Eye protection is a serious business. Almost every industry sees workers exposed to hazardous conditions that cause serious eye injuries daily. The proper safety eyewear, based on the current ANSI Z87.1-2020 safety standards and combined with 100% compliance to a mandatory eye protection program, helps ensure protection for workers across the globe.

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