In everyday life, any person may encounter a task to measure the rigidity of water at home. Stiffness is the number of magnesium and calcium salts, they adversely affect the quality of various processes in which water with increased rigidity is involved. In urban water pipes, this indicator should be about 7 mgq / l, but in fact the norms are often broken. The lower the percentage of salts, the water is softer and more useful. Setting up a dishwasher, dosage of washing powder, filling aquarium or easy interest - that would not serve as a reason for measurements, this instruction will help you to know the rigidity of water.
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If you wish, only to compare the quality of water from different sources to choose the best, the easiest to weigh it: the easier the water, the one is softer and more suitable for use. You can also brew high quality tea, give it to brew, and then evaluate the color and transparency of the drink: the best water in the vessel with the transparent liquid of the peach shade, and the turbid tea indicates contamination.
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Increased water rigidity also affects the quality of washing, washing, because detergents are poorly dissolved in such water and, accordingly, less effective. Consequently, another way of checking: if soap foams well, it is even difficult to wash off - the water is soft.
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It is possible to use soap in a different way: to chop it into the chips, dissolve in a glass of hot water and leave to be broken. In the case of formation on the surface of insoluble soap crust, it can be concluded that the water is rigid. Otherwise, the fluid should be transparent, without slices of soap.
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By the intensity of the formation of scale in the kettle, you can also make certain conclusions: the greater the water than the water.
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Type in a bottle of water and put two days in the dark place. Recovered a turbid greenish tint, a film or a flask - water of poor quality. Transparent water without the above signs - a sign of good quality.
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Apply a drop of water on a mirror or glass, and let it dry. There is no trace from it - pure water, stains talk about a poor-quality substance.
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Add a weak manganese solution and look at the change in the color of the fluid: quickly yellowes - poor-quality water, if not - can drink this water.
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Choose small helpers who react to extraneous elements in water. For example, the freshwater mollusks of the Unionidae family, noticing something wrong, closed their sinks.
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Another way is to rely on your flavor receptors. People with extensive experience can determine the rigidity of water taste up to 2-3 mg-eq / l, but this requires a small preparation.
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In specialized stores for fish breeding or online stores, you can purchase special express tests for measuring water hardness. Some test systems propose to determine the result visually, assessing the change in the color of the reagent. Others are a strip with an indicator, they are cheaper than test systems. You can buy comprehensive tests with several indicators. Such devices, of course, will give an accurate and reliable result, but sometimes an error is allowed 1-2 mM-eq / l. Before use, be sure to read the application instructions.
Do not forget that your health and health of your loved ones depends on the quality of water that you consume. Excessive rigidity reduces detergent efficiency. Therefore, it is worth being attentive and responsible for the use of water, check its purity and chemical composition and, if possible, choose the best, determining its quality at least at home. In order to reduce the rigidity of water at home, there is a single recipe: it is necessary to boil it before any use.
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