Sawyer, the leader in portable water filtration solutions, has partnered with Cnoc Outdoors, a pioneer in outdoor hydration, to introduce a top-tier portable water filtration system ideal for hiking, ...

In contrast to larger particles, the PM2.5 (2.5 microns ... up to date the filters for their central air and central heating.” People going outside should wear an N-95 or N-100 mask.

It's well under $100 with low filter replacement costs ... and other particulate matter of 0.3 to 10 microns. Activated carbon filters can remove VOCs and other gases. HEPA is an acronym for ...

If fitted and worn correctly, the N95 mask filters out 95% of particles larger than 0.3 microns, so it’s very ... are much smaller — about 10 to 100 times tinier — than respiratory droplets ...

Paper-thin optical lenses simple enough to mass produce like microchips could enable a new generation of compact optical devices. Researchers have fabricated and tested flat lenses called Fresnel zone ...

Explore the top 10 options for best 1.5 ton ACs in India that help you create a comfortable home environment. Choose from ...

The United States Department of Agriculture warns that wildfires, such as those raging in the Los Angeles Area, can render ...

Summer is just a few months away, and with forecasts predicting rising temperatures and weather changes, installing a Split ...

OphirSP402S Large Format Beam Profiler Camera high-resolution laser beam profiler camera with large 1.1” sensor format, ...

This bottle (and its 0.6-liter version, which I also tested) had the strongest plasticky taste of any in my testing pool, although if filtration is a priority, the impressive 1-micron filter ...

Researchers have developed a groundbreaking method to produce Fresnel zone plates — paper-thin optical lenses — using ...