Researchers at the University of Michigan found that common disposable gloves can leave soap-like particles called stearates on lab equipment. The gloves they tested included nitrile and latex, and manufacturers add stearates so the gloves come off molds more easily.
The stearate coating can contaminate filters, slides and other surfaces used to measure microplastics in air, water and other samples. The team tested several kinds of gloves and found cleanroom gloves released the fewest particles. They now advise checking gloves and methods to avoid wrong results.
Difficult words
- stearate — soap-like particles from oils or fatsstearates
- disposable — meant to be used once and thrown away
- contaminate — make dirty or unsafe by adding unwanted substances
- coating — a thin layer on a surface for protection
- microplastic — very small pieces of plastic in environmentmicroplastics
- cleanroom — a room kept very clean for experiments
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Do you use disposable gloves at home or work? When do you use them?
- Why can stearate contamination give wrong results in tests?
- Which gloves would you choose for a lab job, and why?
Related articles
Wastewater surveillance reveals antibiotic resistance across Indian cities
A study of sewage from four Indian cities found many antibiotic resistance genes and similar resistance patterns. The 2025 National Action Plan and experts promote wider wastewater surveillance, but critics warn of weak implementation.
Indigenous rights and knowledge at COP30 in Belém
At COP30 in Belém (November 10–21, 2025), climate scientist Sineia Do Vale said securing Indigenous land rights and combining traditional knowledge with science is essential. Panelists urged funding and policy support after severe fires in Roraima in 2024.
Connie Nshemereirwe: linking science, policy and education in Africa
Connie Nshemereirwe is an educational measurement specialist and former engineer who promotes Africa-led research, better science communication and stronger ties among scientists in the global South. She also directs the Africa Science Leadership Program.
