News and Updates

Displaying 1 - 7 of 7

Some Air Cleaners Release Harmful By-Products. Now We Have a Way to Measure Them.

September 2, 2025

Many types of air cleaners can generate small amounts of air pollution. Until now, there was no standard way to measure these negative by-products.

UV Disinfection Lights Can Cause Indoor Air Pollution

May 30, 2024

Further research is needed to understand how to minimize the unintended byproducts of ultraviolet light.

A researcher wearing a face mask gestures to a Christmas tree set up in a metallic box with a large spotlight shining on it.

Live Christmas Trees Affect Indoor Air Chemistry, NIST Researchers Find

December 22, 2023

Many families enjoy the fresh fragrance of a real tree. That smell comes from chemicals called volatile organic compounds (VOCs).

A white, square plastic CO2 meter sits on a table in a restaurant setting, reading 621 ppm.

NIST’s Indoor CO₂ Tool Can Help Assess Ventilation and Indoor Air Quality

July 19, 2022

The free tool calculates target CO2 levels based on the user’s desired ventilation rate and information about a building and its occupants.

Streamlined NIST Tool Could Help Homeowners, Renters Reduce Airborne Exposure to COVID

November 24, 2021

COVID-19 is still circulating in the U.S. and may once again gain traction as families and friends gather indoors over the holidays. There are several measures

A hospital room containing a nurse and patient exhaling aerosols carrying viruses. Air ducts and filters are depicted above and a portable air filter is shown in the room.

NIST Airflow Model Could Help Reduce Indoor Exposure to Aerosols Carrying Coronavirus

June 11, 2020

Researchers at the National Institute of Standards and Technology (NIST) have built an online tool that could help decrease the concentration of aerosols

Two hands in purple gloves hold onto butane lighters, which are being used to light up two cigarettes poised in a metal device.

Butt Emissions: Study Finds Even Extinguished Cigarettes Give Off Toxins

January 29, 2020

Cigarette butts pile up in parks, beaches, streets and bus stops, places where all types of littering are frowned upon. An estimated more than five trillion

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