About Micron Filters
- A micron filter is a device that uses filter papers with pore size in the range of microns. With such small pore sizes, these filters are a perfect choice for both industrial and home use. Because of their efficiency and their relative ease in cleaning, most filter devices manufactured today use micron filters. The pore size of these filters can range from 5 micron to 1 micron. Depending on the size of the pores, the price varies.
Different Types of Micron Filters
- Depending on the material and type of filter, micron water filters are classified as spun sediment filters, string wound sediment filters and pleated sediment filters. These micron filters are rated on their efficiency with the use of a micron rating system, which basically measures the pore sizes. Such filters can be rated on an absolute or nominal scale. Absolute scale signifies that 99 percent of the openings are of that size while the nominal suggests that only 80 percent maximum conform to the size.
Spun Sediment Filter
- Spun sediment filter consists of fine threads of polypropylene woven together in such a manner that the outer layers have a lower micron rating while the inner layers have progressively higher ratings. Therefore, the micron rating of a spun filter is always quoted in terms of nominal micron rating. One advantage that this filter has over other types is that as water passes through the filter, larger particles and sediments settle outside the outer layers while only smaller sized materials stay back within the filter.
String Wound Filter
- String wound filter is very similar to string wound filter in terms of construction. It is made from polypropylene. However, the purpose of string wound filters is to hold back maximum amount of dirt and sand particles. It is for this reason that string wound filters are used to filter water wells. Obviously, these filters get only a nominal rating.
Pleated Sediment Filter
- Pleated sediment filters consist of only one layer that is made from a variety of materials such as cellulose and polyesters. In fact, this type of filter is commonly used in many domestic filter systems today. The price of each filter paper depends directly on its thickness and material as well as its micron rating.