And yes, they were intended for children
[1] Manufacture [edit] Cigarette filters are usually made from plastic cellulose acetate fibre, [3] but sometimes also from paper [16] or activated charcoal (either as a cavity filter or embedded into the cellulose acetate)
But the Blueair Blue Pure 511 is smaller, quieter, less expensive, and just as effective
But, they can screen out the smallest of particles and are beneficial for those with respiratory problems or autoimmune disorders
Their unique U-shaped chamber allows vapour to travel down one side of the coil, make a U-turn, and go back up the other side, passing the coil wire twice for enhanced flavour and vapour production
Im an Air Force Retiree, 4 years active service (1972-76) and 26 years Active Reserve (1988-2014)wore the uniform for 30 years