Champagne 225x300 Filter RefrigeratorRefrigerator Water Filter life depends on the amount of pollutants in the water and the level of the use of filters. Wells are more likely contaminants in public water is not included and can be found more frequently treated filter change required. As a rule of thumb, the filter should be changed by the manufacturer or at least every six months are given.

Carbon is the primary substance used in water filtration methods because carbon has the potential to absorb many of the chemicals found in water. Most refrigerator water filters, which meet NSF/ANSI 42 certification standards, use granular activated carbon (GAC) to attract chemicals and impurities responsible for bad taste and odor, such as those that are a by-product of chlorine. These filters are not capable, however, to rid water of more dangerous, health-threatening contaminants. The method by which water is channeled through GAC filters does not allow sufficient time to complete the absorption of such substances. Various bacteria are formed, trapped and allowed to multiply, which further contaminates water processed by the filters. Carbon is not capable to absorb heavy metals, such as lead. GAC filters may trap some heavy metals and sediments, but allow others to filter through to the output water. Failure to change the water filter, every six months, allows unabsorbed water contaminants and newly formed bacteria to saturate the filter, forcing the filter to leak contaminants back into processed water. The water output may contain more contaminants than the filter was intended to remove in the first place.

Technology has lead to the development of more absorbent carbon-based filters, solid carbon block filters. These filters include solid blocks of carbon to absorb contaminants from water. Water takes longer to strain through carbon blocks than it does carbon granules, so that carbon blocks provide sufficient time for the absorption of more health-threatening containments. While carbon block filters are capable to absorb toxics, pesticides, TTHM’s and other contaminants, they cannot absorb heavy metals or contaminants that are by-products of agricultural fertilization, such as nitrates or sulfides. The composition of carbon blocks allows them to restrain heavy metals and bacteria away from output water, however, nitrates and sulfides are not filtered. Even so, carbon block filters are sufficient to meet NSF/ANSI 53 certification standards. Failure to change carbon block filters, every six months, allows contaminants to saturate the filter, forcing the filter to leak contaminants into the processed water. When sediments are not removed from water, those sediments buildup and corrode filter fittings and water fixtures, causing them to leak. This type of damage to filters and fixtures may cause the output water to contain more contaminants than the water input to the filter. Failure to change the filters might also reduce the water pressure, within the filtering system, forcing it to be ineffective.

Some refrigerator water filters may include fiber water filters. These filters are made of tightly wrapped fibers of rayon or spun cellulose, which trap rust, lead and other sediments found in water. When used alone, these filters are ineffective in reducing any chemical or health-threatening contaminants. Fiber filters are best suited for use with other types of filters to reduce the concentration of sediments. They should be replaced, every six months, to avoid a build-up of sediments that would force the filter to leak the contaminants back into the processed water.

furniture bamboo  300x225 Teak Outdoor FurnitureGarden furniture complement the beauty and elegance of your home garden. As a natural product, wood is considered the best material for the manufacture of furniture. Since most wood is not resistant to adverse weather conditions and insects, should be careful, to stretch their sustainability. This is where the advantages of teak wood as the ideal wood for making furniture. Teak is one of the best, durable and sturdy materials for indoor and outdoor furniture. Some of the specialties of teak as the most suitable wood for outdoor furniture, are given below.

1) Teak wood is good-looking, smooth, sturdy and durable.

2) It is resistant to bad weather and insects. A garden bench made of teak is capable of withstanding rain and sunlight for several years even without periodic maintenance.

3) Unlike furniture made of other materials, teak furniture don’t require artificial polishing or oiling.

4) Teak wood is rich with silica and natural oil content that make it resistant to all kinds of insects.

5) Teak is very suitable for structural works and carved designs for its sturdiness, elasticity and ease of use.

6) Teak wood does not get rotted or splintered even if it remains in contact with metals like iron for years due to the presence of silica and oil content.

7) The denseness of teak, together with its other qualities, makes it the favorite wood of shipbuilders throughout the world.

8) Because of its stylish design with clean lines, teak wood stands out among all timbers.

9) Cleaning and maintaining teak furniture is pretty easy.

The Teak tree is classed as Tectona Grandis and it belongs to the family Verbenaceae. One of the reasons for the high cost of teak is that it takes approximately 50 to 60 years to complete its physical growth. Despite its high cost and difficulty to acquire, teak is still the preferred wood for making high quality furniture, doors, windows etc. Although teak wood is immune to heat and humidity and resistant to insects, timely cleaning and maintenance will definitely prolong its life. The high cost and scarcity of teak have slowly given rise to the use of other hardwoods like African oak and mahogany in its place. But none of them matches the quality of teak.