UL Chemical Safety and the Georgia Institute of Technology, also known as Georgia Tech, announced a body of research that explored the impact of 3D printing on indoor air quality. Following an in-depth, two-year research period with Georgia Tech, UL Chemical Safety found that many desktop 3D printers generate ultrafine particles (UFPs) while in operation. UFPs may pose a health concern since they are the size of nanoparticles and may be inhaled and penetrate deep into the human pulmonary system.

Based on the scientific research conducted with Georgia Tech and further collaboration with third-party stakeholders, a UL/American National Standards Institute (ANSI) consensus standard for testing and evaluating 3D printer emissions has been developed. UL/ANSI 2904 is now in the final stages of completion, and the final standard is expected to be ready in December 2018. Ongoing research will address other technologies and their integration into the standard.

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