The water softener is useful for pulling lime out of hard water from a mains water pipe; typically, this device is periodically regenerated by adding sodium chloride, in a purer form than simple table salt (that means: not blended with other edible salts, commonly used in table salt
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Perborate, percarbonate… why are they different? Are they both recommendable, as bleaching and hygienizing agents, or better are they someway concerning? Perborate was in use for decades as a detergents ingredient or as powdered additive for laundry, as they thought it was safe. Recently, both UsEpa and
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Foam, that in our minds we usually associate to detergents, is not always welcome: in some products foam is useful, in others it would be counterproductive. For example: in washing-up foam helps to make detergent clearly visible to the user; in dishwashing by machine, on the other
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Some people think that pure ammonia, diluted in water, is easy and comfortable to be used as a cleaner for windows, floors, shop windows, food showcases in restaurants… Actually caution is recommended, because ammonia vapours are very corrosive to mucous membranes of respiratory system and to eyes
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Everyone who is genetically predisposed to allergy may become allergic, in his lifetime, even if he or she is not aware of being predisposed… Allergic reaction arises depending on particular conditions of immunitary system, as well as on environmental factors. For someone few contact with allergens are
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Our body is a collection of tissues, each one with a function; they are constituted by the cells, which are characterized by different kinds of proteins. Each protein is created following the instructions codified inthe DNA, which is organized in chromosomes and is stored inside the cell
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The impact on the environment should be evaluated depending on the earliest ecosystem is going to receive the substances: if the first ecosystem is an aquatic one, the first feature to check is the toxicity vs aquatic organisms. This is expressed as EC50 (that is the concentration
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