The micron, also known as the micrometre, is a unit of measure denoting the aliquot of the meter. More precisely, it is one millionth of a meter or one thousandth of a millimetre or 1/25000 inch. To better visualize the particle size, it is worth knowing that the human hair has a thickness of about 30 – 120 microns. Thanks to the micron, for example, you can measure the quantity of varnish on the car’s body. The devices that measure these values are often used by people who want to buy a car on the secondary market. Microns are also used to determine the fibre thickness for fabrics.
In the case of water treatment, the filtration accuracy is determined by means of a given cartridge thanks to the above unit.
Filters with activated carbon and an ion exchange resin are excellent at dealing with any pollution. Filters with an accuracy of 20-50 microns should be sufficient for tap water. Water coming from waterworks is usually of good quality, and the filter is useful mainly in the case of breakdowns or maintenance works, in which larger particles may enter the installation.
Filters with these attributes should perfectly cope with the problem. However, to be sure that in addition to mechanical impurities, organic pollutants, such as chlorine and its derivatives, pesticides, herbicides or heavy metals will be also removed from the water, filters should remove even smaller particles.
Modern Dafi filters remove impurities up to 0.5 microns in size. At the same time, the filters do not cause demineralization, i.e. they do not remove minerals beneficial to the human body from the water, such as calcium or magnesium, thus preventing deficiencies of these micronutrients.
Remember to properly prepare the filter at the first use to ensure the best quality of filtered water, that is, the filter is ready to stop all impurities. After placing the filter in a jug, fill it twice with tap water, which is then poured out (it can also be used to water the flowers). Thanks to this the filter is bled and rinsed. The subsequent fillings no longer require any additional operations, simply filling the pot with tap water as needed.