New Delhi, Dec. 30 -- AAF (American Air Filter) stresses on protection from PM1 (Particulate Matter 1) particles. Ultrafine PM1 dust particles can get deep into your lungs and even get into your bloodstream and can thus spread to the organs.

PM- Particulate Matter in the air is a mixture of solids and liquid droplets. PM particles are characterized as PM10, PM2.5 and PM1 particles. PM10 particles have 10-micrometer diameters in size and PM2.5 will be 2.5-micrometer diameter which is visible and noticeable.

var gptAdSlots = []; var googletag = googletag || {}; googletag.cmd = googletag.cmd || []; googletag.cmd.push(function() { var aftertowprar= googletag.sizeMapping(). addSize([728, 90]). build();

console.log('= at vr'); gptAdSlots[0]=...