With the gradual popularization of water purifiers, more and more water purifiers have entered thousands of households, but many consumers are looking at the instructions of the water purifiers, there are always microfiltration, nanofiltration, ultrafiltration, anti- Infiltrate these words. So what is the difference between these concepts?
Microfiltration: (also called coarse filtration) is a simple filtration. The pore size of the microfiltration membrane is generally 0.51 micrometer, which can only filter visible impurities such as sediment and rust and large bacterial clusters. The water treated by the microfiltration membrane can only be clear in the senses and cannot be used as qualified drinking water. A simple filter device that is common in the market.
Ultrafiltration: (UF) is also called hollow fiber. It is a physical screening process for separating liquids by using ultrafiltration membrane pore size. The pore size is generally 0.1-0.01 micrometer, which can effectively remove harmful impurities in tap water such as bacteria, colloids, viruses and impurities. Substance, because ultrafiltration membranes are physically filtered, they cannot filter out chemicals and retain minerals in water, but they also cannot filter out heavy metals. In general, the water purified by ultrafiltration can reach the standard of direct drinking, and it is a water purifier which is widely used at present.
Nanofiltration: (referred to as NF) nano filter has a pore size of 0.01-0.001 micron; it can filter out chemical pollutants such as antibiotics, hormones, pesticides, petroleum, detergents, heavy metals, algae toxins; and mineral ions smaller than this pore size. It can pass; it can effectively retain beneficial minerals.
Reverse osmosis: (RO) uses a special high-pressure water pump to increase the raw water pressure, so that the raw water penetrates through the reverse-permeation membrane with a pore diameter of 0.0001 μm under the pressure. It can remove chemical pollutants such as heavy metals, pesticides and chloroform in water. The reverse osmosis water purifier is usually pure water, the pH value is acidic, and long-term drinking is not good for health.
In general, the water purifier can handle different diameters depending on the filter element. When purchasing a water purifier, you must ask about the service life of the water purifier filter. You can only consider the price, depending on the actual situation. Demand is selected.
Slide Switches
The Slide Switches is used to switch the circuit by turning the switch handle to turn the circuit on or off. It is different from our other serious switches, for example, Metal Switches, Automotive Switches, LED light Switches, Push Button Switches, Micro Switches, The commonly used varieties of Miniature Slide Switches are single pole double position, single pole three position, double pole double position and bipolar three position. It is generally used for low voltage circuits, featuring flexible slider action, stable and reliable performance. Mainly used in a wide range of instruments, fax machines, audio equipment, medical equipment, beauty equipment, and other electronic products.
The Mini Slide Switches are divided into: low-current slide switches (right), and high-current slide switches (left). Small current slide switches are commonly used in electronic toys, digital communications. High current is generally used in electrical appliances, machinery, etc.
It can divided into 4 types modals, respectively are:
1. High-current sealed switch
Its rated current is as high as 5A, and it is sealed with epoxy resin. It is a large current sealed switch. It has a variety of terminal forms, contact materials are silver, gold, switching functions. Therefore, there are many types of subdivisions. Widely used in electrical appliances and machinery
2. Single sided snap-on surface mount type slide switch
The actuator is operated on the side and the pins are patch-type, so it is a unilateral spring-back surface mount type slide switch. Widely used in communications, digital audio and video
3.4P3T in-line slide switch
The contact form is 4P3T and the pin is in-line. It is 4P3T in-line slide switch. 4P3T determines that it has 8 pairs of pins. At the same time, there are two pairs of brackets that support, fix, and ground. Widely used in building automation, electronic products
4.Long actuator jacking type slide switch
Actuator 12mm, and located at the top of the switch, it is a long actuator jacking type slide switch. Widely used in digital audio and video, various instruments / instrumentation equipment
Slide Switches,Micro Slide Switch,2 Position Slide Switch,Momentary Slide Switch
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