Nanometer to Micron Conversion Table

What is a Micron? A micron is a unit of measure in the metric system. It equals one-millionth of a meter and one-thousandth of a millimeter. It is a shorten word for micrometer.

For example, a 20-micron filter has larger openings than a 5-micron filter. Bacteria range in size from 0.2 to 2 microns in width or diameter and from 1 to 10 microns in length for the nonspherical specie, so a 1-micron filter will remove most bacteria and cysts.

Ultra Pro Deck Protectors are 110 Microns thick. Penny Sleeves are in the 40 Micron area.

A grain of fine beach sand is about 90 microns. Pollen is between 30-50 microns thick. Ragweed is between 17-23 microns thick. Typical atmospheric dust measures between 0.001-10 microns.

An absolute 5 micron filter is one that traps 99.9 percent of the particles of 5 microns and larger. For most purposes, nominal filters are fine, but when very high grade water is required, an absolute-rated filter may be needed.

The usable static feature discrimination limit, feature that you can feel when your skin is statically pressed against the feature (different mechanoreceptors are involved in detecting such features) is around 100 microns, human hair.

0.5-50 microns

50 micron is smaller than 100 micron.

House dust mite faeces consist of leftover undigested food and digestive enzymes. The house dust mite enzymes digest the large particles in the outer environment of the mite and convert them into future food for the mites. The mites will eat the excrements again and use the digestive proteins from e.g. the skin dander.

The average intact mite dropping is 10 to 40 microns in size. However, in one research paper scientists observed airborne particles containing mite allergens that ranged from 5 to 40 microns. These were described as either faeces, fibres or flakes of translucent particles.

They don’t poo! The mite has no anus, and stores its waste in large cells within its gut.