Particle Size Chart

When you are determining the proper type of filtration for a particular element it is important to know what that elements size is. The list below has several elements listed with its particle size. We will continue to update the chart as we come across more elements and their sizes. 

Particle Particle Size (microns)
   
Anthrax 1.0 – 5
Antiperspirant 6. 10
Asbestos 0.7 – 90
Atmospheric Dust 0.001 – 40
Auto and Car Emission 1 – 150
Bacteria 0.3 – 60
Beach Sand 100 – 10000
Bone Dust 3 – 300
Bromine 0.1 – 0.7
Burning Wood 0.2 – 3
Calcium Zinc Dust 0.7 – 20
Carbon Black Dust 0.2 – 10
Carbon Dioxide 0.00
Cayenne Pepper 15 – 1000
Cement Dust 3 – 100
Clay, coarse 2.0 – 4
Clay, medium 1.0 – 2
Clay, fine 0.5 – 1
Coal Dust 1 – 100
Coal Flue Gas 0.08 – 0.2
Coffee 5 – 400
Combustion 0.01 – 0.1
Combustion Related- Motor Vehicles, wood burning, open burning, industrial processes up to 2.5
Copier Toner 0.5 – 15
Corn Starch 0.1 – 0.8
Dot (.) 615.00
Dust Mites 100 – 300
Eye of a Needle 1230.00
Face Powder 0.1 – 30
Fertilizer 10 – 1000
Fiberglass Insulation 1 – 1000
Fly Ash 1 – 1000
Gelatin 5. – 90
Ginger 25 – 40
Glass Wool 1000.00
Grain Dusts 5 – 1000
Gravel, very fine (0.08 inch) 2000.00
Gravel, fine (0.16 inch) 4000.00
Gravel, medium (0.3 inch) 8000.00
Gravel, coarse (0.6 – 1.3 inches) 15000 – 30000
Gravel, very coarse (1.3 – 2.5 inches) 30000 – 65000
Ground Limestone 10 – 1000
Hair 5 – 200
Household dust 0.05 – 100
Human Hair 40 – 300
Human Sneeze 10 – 100
Humidifier 0.9 – 3
Insecticide Dusts 0.5 – 10
Iron Dust 4. -20
Lead, solder radiator manufacturing – mean value 1.30
Lead, battery and lead powder manufacturing 12. – 12
Lead Dust 0.1 – 0.7
Liquid Droplets 0.5 – 5
Metallurgical Dust 0.1 – 1000
Metallurgical Fumes 0.1 – 1000
Milled Flour, Milled Corn 1 – 100
Mist 70 – 350
Mold 3. -12
Mold Spores 10. -30
Mustard 6. – 10
Oil Smoke 0.03 – 1
One inch 25400.00
Oxygen 0.00
Paint Pigments 0.1 – 5
Pesticides & Herbicides 0.00
Pet Dander 0.5 – 100
Pollen 10 – 1000
Radioactive Fallout 0.1 – 10
Red Blood Cells 5. – 10
Rosin Smoke 0.01 – 1
Sand, very fine (0.0025 inch) 62.00
Sand, fine (0.005 inch) 125.00
Sand, medium (0.01 inch) 250.00
Sand, coarse (0.02 inch) 500.00
Sand, very coarse (0.02 inch) 500.00
Saw Dust 30 – 600
Sea Salt 0.035 – 0.5
Silt, coarse (0.0015) 37.00
Silt, medium (0.0006 – 0.0012 inche) 16 – 30
Silt, fine  8 – 13
Silt, very fine 4.0 – 8
Skin flakes 0.5 – 10
Smoke from Natural Materials 0.01 – 0.1
Smoke from Synthetic Materials 1.0 – 50
Smoldering or Flaming Cooking Oil 0.03 – 0.9
Spanish Moss Pollen 150 – 750
Spider web 2.0 – 3
Spores from plants 3 – 100
Starches 3 – 100
Sugars 0.0008 – 0.005
Talcum Dust 0.5 – 50
Tea Dust 8 – 300
Textile Dust 6.0 – 20
Textile Fibers 10 – 1000
Tobacco Smoke 0.01 – 4
Typical Atmospheric Dust 0.001 to 30
Viruses 0.005 – 0.3
Yeast Cells 1.0 – 50

Particle Size Classes

Large Size Particles

Larger than 100 microns

These particles fall out of the air quickly because of their weight. Unless there is a very large quantity these particles seldom cause an air quality issue.

Medium Size Particles

Particles size 10-100 microns

Unlike Large particles these settle out slowly in the air stream. They can cause more of an air quality problem but are seldom considered dangerous. Large concentrations of these particle will be a severe nuisance. Our bodies do a fair job of filtering most of them.

PM10 Particles

PM10 Particles are often called coarse particles. They range in size from 2.5 to 10 microns. These particles can irritate the eyes and throat. People with respiratory issues like COPD, Asthma and allergies can experience heightened symptoms when they are exposed to these sized particle. These particles include pollen, large bacteria and wind blown dust. These particle need a MERV 11 filter or better for adequate control.

PM2.5 Particles

PM2.5 Particles are smaller than 2.5 microns. These particles are small enough to be breathed deep into the lungs.  They can cause serious health effects in everyone, but especially the old and the young. It is important to remove these particles from the air stream.