Unlike scale inhibition, ion exchange physically removes the hard minerals, reducing limescale and making water suitable for applications where it is kept at a constant high temperature e.g. Ion exchange is a process used to soften hard water by exchanging the magnesium and calcium ions found in hard water with other ions such as sodium or hydrogen ions.
Instead, water softening using a process such as ion exchange is usually recommended in water areas with alkalinity levels of 180ppm or more (very hard water) and applications where water is kept at a constant temperature of 95☌ or more. This means that polyphosphate does not soften the water but instead works to keep the minerals within the solution, preventing them forming as scale on any surfaces they come into contact with.ĭue to the hard minerals still being present in the water, scale inhibition isn’t suitable for all applications. However, polyphosphate is generally only introduced in very small amounts and it only inhibits scale rather than eradicating it. Food grade polyphosphate is commonly used in scale inhibiting filters to sequester the calcium and magnesium minerals which cause limescale and corrosion. Sequestration is the action of chemically isolating a substance. Granular activated carbon and a carbon block for absorption filtration 0.5 micron - Will remove cysts (giardia and cryptosporidium).1 micron – Will remove particles which are too small to see without a microscope.5 micron - Will remove most particles visible to the naked eye.
Mechanical filters can be anything from a basic mesh that filters out large debris to a ceramic filter which has an extremely complex pore structure for ultra-fine filtration of pathogenic organisms.Ī filter that utilises mechanical filtration will usually be given a micron rating which indicates how effective the filters are in terms of the size of the particles it is capable of removing. The basic idea of mechanical filtration is to physically remove sediment, dirt or any particles in the water using a barrier. These issues, chlorine taste / odour and limescale formation are just two among a host of other common water problems which can be solved by water filtration. Depending on where you live, you may also find that your mains water causes limescale deposits to form which can block pipes and damage appliances.
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Water is vital to a huge number of applications including agriculture, science, medical, transportation, heating, recreation and food processing as well as washing and perhaps most important of all: drinking.įor the majority of us, drinking water comes from a treated municipal supply which is safe to drink but will often feature unpleasant tastes and odours from chemicals such as chlorine which are used to disinfect the water and keep it free of germs and bacteria. Water is one of the most important substances on the planet, it covers 71% of the Earth’s surface and the human body can contain as much as 75% of the stuff. what you’re trying to remove or in some circumstances trying to stop, there are 5 types of water filters:Įach one of these addresses a different water problem and many filters actually use a combination of these methods to perform multiple levels of filtration. From producing better-tasting drinking water to more specialist applications such as brewing coffee and making crystal clear ice, we offer a huge range of filters and cartridges to solve any number of water-related issues. Water Filters remove unwanted impurities from water such as sediment, taste and odour, hardness and bacteria to result in better quality water.
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