Replacement coffee decanter fits Black and Decker Smartbrew coffee makers, DCM1200, DCM1300. Coffee pot has a white lid with white handle. Model: 3380There are a few terms that should be defined that will facilitate an understanding of reverse osmosis water filter systems. The terms and definitions are listed below.
Osmosis - the movement of a lower concentration solution through a semi-permeable membrane into a solution of a higher concentration that equalizes the solution on both sides of the membrane.
Semi-permeable membrane - will allow some atoms or molecules through and not others. The most common example is the lining of the intestines or a cell wall.
Reverse Osmosis-membrane is very fine filter that makes drinkable water from salty water. Pure water is one side of the membrane and salty or contaminated water on the other side. Pressure is applied to the membrane to stop then reverse the osmotic process. It is a slow method but it works.
Reverse osmosis water filter systems push water through the semi-permeable membrane trapping the salt or contaminant molecules on one side, while pure water passes through to the other side.
This process's original purpose was to remove the salt from sea water rendering it safe to drink. This type of system is very popular; however they not only remove contaminants, but also remove valuable trace minerals such as magnesium, potassium, and calcium.
There are other methods of water treatment. Distillation is heating the water to an extremely high temperature vaporizing it. It separates the water molecules from those of contaminants at a greater boiling point than water.
Filtration is the process that pushes water through a filter that traps contaminants and releases only pure water. This process is called adsorption. It breaks the bond between contaminants and water molecules so contaminants can stick to the filter.
Again, reverse osmosis water systems are popular and effective. They may remove valuable trace minerals as well. It is best to research the type of filter that is of interest. Read their descriptions and how they work. Customer satisfaction reports may provide an indication also of the quality of reverse osmosis water filter systems as well as other systems.
John Collins is a content editor who focuses on a wide array of niche health topics. His latest website - Water Purification focuses on fresh pure water sources, and in particular, a natural water filter company our editors personally use with excellent health results known as - Natural Water Purification
Be sure to check out our water filters of choice, they are the water systems we use and recommend to friends and family, and have done for over 3 years.
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