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What is the micron?

A micron is a unit of measurement in the metric system, also known as a micron. The micron is extremely small, so small to be seen with the naked eye. It is equivalent to 1 millionth of a meter 1 μm = 0.000 001 m = 10-6 m. Microns are an important unit of measure for the filtration of liquids, air, microbiology and laboratory processes.

How small is a micron?

A micron is incredibly small, too small to be seen with the human eye unaided. Human hair usually measures between 60 and 80 microns in diameter. Dust mites can be between 1 and 4 microns long. That of the human eye has a limit to see particles of up to 40 microns.

Human eye: 0.04 mm (millimeters) 40 µm (microns)
Compound microscope: 0.2 µm (microns)
Transmission electron microscope: 1.0 µm (microns)
Scanning electron microscope: 0.5 µm (microns)

What kinds of things can be measured in microns?

Microns are used by air filtration companies to measure airborne particles such as pollen, dust, pet dander, dust mites, bacteria, mold spores, and other minute contaminants. In addition, microns are used to measure fiber optic cores and microchip line widths. They are also used to measure the diameter of wool fibers. The smaller the fiber, the more valuable the wool.

Microns are an important tool for measuring suspended solids in water. The size of a particle determines its potential for harm to human health. Most of the particles in air and water are smaller than 1 micron.

In drinking water treatment the common filtration is 5 to 10 microns as a basic pre-treatment.

What are sub-microns?

The measurement for particles smaller than 1 micron is called a submicron, submicron, or submicron measurement. For example, computer chip technology can go down to a submicron level. The standard line width on a chip today is 0.13 microns. Most microchips contain millions of transistors with these tiny characteristics. In water purification there are equipment that retain sub-micron particles to be used for human consumption or water used in the laboratory, these can be less if we use micro-filtration to retain bacteria at 0.2 µm microns.

Some of the equipment used in water treatment:

Microfiltration (0.2 micron)
Ultrafiltration (0.01 micron)
Nanofiltration (0.001 micron)
Inverse osmosis (0.0001 microns)

What is the micrometer?

The micrometer is the instrument that measures microns, there are mechanical (Palmer) and digital electronic micrometers.


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