Unlike barrier filters which trap expectorated matter whilst allowing viruses and bacteria to pass through, Vitalograph filters use an electrostatically charged material that traps expectorated ...

Sadie said she didn't think the filter should be allowed on TikTok without some kind of warning A viral filter which made people appear overweight has been removed from TikTok, after the BBC ...

The Fisher Scientific™ Abbe Bench-top Refractometer measures refractive indices of liquid and solid samples at D-line (589nm), featuring a combination of the Brix and refractive index (nD ...

Oval decals and, later, stickers with the STP logo were favorite merchandise. We occasionally see unopened packs for sale online, where they sell for about $100 to $150. You have something of ...