Please register to participate in our discussions with 1.5 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads. 19 posts, read 16,260 times 794 posts, read 657,021 times 1,987 posts, read 1,834,316 times 12,222 posts, read 6,074,363 times 450 posts, read 635,471 times 4,860 posts, read 4,846,796 times 64 posts, read 46,542 times Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.Showing 1-10 of 31 products £ low to high £ high to low A-Z low to high A-Z high to low Allergen:House Dust Mite, Smoke and Pollen RRP:Prices ranging from £49.99 - £149.99 HoMedics HEPA Air Purifier Allergen:Pollen, Smoke, Cat Allergen, Dog Allergen and House Dust Mite

RRP:Prices ranging from £99.99 - £199.99 RRP:Prices ranging from £99.99 - £149.99 Fellowes AeraMax Air Purifier Allergen:Cat Allergen, Dog Allergen, Pollen, Mould, Smoke and House Dust Miteoransi v-hepa finn air purifier RRP:Prices ranging from £149.99 - £249.99hunter quietflo air purifier instructions Meaco MeacoClean Air Purifiersifton air cleaner breather kit Allergen:Pollen, House Dust Mite, Smoke, Cat Allergen, Dog Allergen, Silkworm Allergen, Cockroach, Fungi, Mould, Bacteria and Dust RRP:Prices ranging from £149.99 - £379.99 RRP:Prices ranging from £169 - £209 Electrolux Oxygen Air Purifier Allergen:House Dust Mite, Cat Allergen, Dog Allergen, Pollen, Fungi and Smoke

RRP:Prices ranging from £179.99 - £349.99 Winix Plasmawave Air Purifier Allergen:House Dust Mite, Cat Allergen, Dog Allergen, Cockroach, Silkworm Allergen, Pollen and Fungi RRP:Prices ranging from £179.99 - £299.99 Samsung Plasma Ionizer Air Purifier RRP:Prices ranging from $180 - $220 De'Longhi Air Filtration System Allergen:House Dust Mite, Cat Allergen, Dog Allergen, Pollen, Fungi and Cigarette Smoke RRP:Prices ranging from £199.00 - £289.00 Volume 98, March 2016, Pages 21–29 Efficiency of portable HEPA air purifiers against traffic related combustion particlesa b Received 1 October 2015, Revised 23 December 2015, Accepted 23 December 2015, Available online 29 December 2015•CADR is higher for diesel than for KCl particles.•Particle penetration is different through HEPA compared to respirator filters.•Size-specific differences in CADR were found between diesel and KCl particles.•CADR was lowest for particles <0.1 μm.

Exposure to diesel combustion particles is known to cause and exacerbate respiratory conditions, including asthma. High efficiency particulate air (HEPA) purifiers can provide health benefits by reducing concentrations of these particles. National standards call for air purifiers to be tested using tobacco smoke, as well as aerosolized dust, pollen, and potassium chloride (KCl) particles. Little is known about the efficiency of HEPA air purifiers against diesel particles. Previous studies performed with respirator filters have shown higher penetration of combustion generated particles compared to standard test particles. Within a controlled laboratory setting, we compared the Clean Air Delivery Rate (CADR) of six models of air purifiers with diesel and KCl particles, and measured noise during operation. CADR was determined for total concentration and size-selectively for particles of 0.03–1 μm. Lowest CADRs were consistently found for particles <0.1 μm. Results showed significant differences between CADRs obtained with diesel and KCl aerosols.