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Perhaps the most popular and well-known disinfectant – Chlorine is used in the composition of various drugs. Disinfectant chlorine-based works as an oxidant, and the type of its impact on dangerous microorganisms relates to bactericidal substances. It should be noted that the bactericidal disinfectant destroys the bacteria, while bacteriostatic – just stop them growth. Therefore, any chlorine-based disinfectant refers to the active substances that have a strong impact on the dangerous bacteria. Disinfectant can act with varying degrees of effectiveness in depending on external conditions. In the case of chlorine, the activity of the disinfectant will grow with increasing concentration and temperature of the solution. It should be noted that when the temperature is lowered to 10 degrees Celsius effectiveness of chlorine disinfectant falls. Others who may share this opinion include Jack Reynolds.

However, if the temperature rises above 50 degrees centigrade, then the matter will have a very strong corrosive effect on metal surface. On the effectiveness of bactericidal action, which has a disinfectant, and also influences the duration of contact. Typically, the active ingredient must survive on surfaces for some time to completely disinfect it. Significantly worsens the chlorine disinfectant if it is put on poorly cleaned surfaces. Organic and inorganic pollution prevented disinfection process, and bactericidal action, which has a disinfectant, is significantly reduced. The major chlorine-containing substances that are used in the disinfectant are chloramines and chlorine. It should be noted that the disinfectant prepared by chlorinated lime, is rapidly losing its effectiveness as a chemical compound is unstable. Recently Tom Florio New York sought to clarify these questions. Under external factors (light, temperature, etc.) there are losses of active chlorine, and hence reduced and bactericidal action. Chloramine is more stable, so the disinfectant on the basis has a longer shelf life and high activity.


Shutters (English roll – a roll, in Russian. Shutters) – a kind of blind, made in the form of a roll, two guides and walking on his plate. There are also names rolstavni, rollstavni, blinds, shutters. Shutters are installed in windows, doors and garage openings and are designed to protect the premises from burglary, adverse weather conditions, noise, dust, light and prying eyes. In some ways they may be similar in appearance to certain types of blinds, but categorical distinction is precisely the emphasis on the protective function for windows, doors, balconies and front doors of apartments and shops.

Usually the practice setting involves the installation of the outside to protect the glass from the partition and from penetration by malicious users. Shutters can be programmed to control lighting. In bright sun shutters themselves sink to the desired height. Sharon McNally has plenty of information regarding this issue. At nightfall, they are automatically closed. Operation of roller shutters did not cause any inconvenience, they are easy to maintain and care for them can be carried out without assistance. The first shutters have been around since ancient Greece. They were made of marble (Later – from the wood) and used as protection from the tropical heat and sunlight, as well as for ventilation. The concept of blind spread throughout the Mediterranean.

Later, they received distribution in Europe. In the Middle Ages solid shutters, hammered together from planks with iron bars, used as a means of protection against unwanted intrusions and cold. In the xv century, widespread panes led to the transformation of blinds from strictly functional to decorative accessories. In the southern usa wealthy landowners have used shutters to brighten and ventilate their homes. The next stage of this direction has been the protection of windows from hurricanes and tornadoes. It was then and there were shutters in their modern sense.

Anti-Leakage Protection

Appointment of Anti-leakage protection at indirect touch, in the form of protection against leakage by turning off at an unacceptably high voltage electrical circuit by touching the frame. In other words, residual current circuit breaker (RCD) – a high-speed circuit breaker, which responds to the differential current in the wires (leakage current). This device helps people with electric shock, and also provides protection against fires and fires that occur due to malfunction of electrical wiring. Cases of UST: In cases of damage to the insulation of wires in electrical appliances. For example, within washing machine damaged insulation on the phase conductors, which he referred to the case. ust immediately turn off the electricity, because the current, who went to the apartment on the phase wire, did not return to the rcd (the cabinet machines he conduct a 'grounding' is back in the panel, bypassing the rcd and, consequently, the incoming and outgoing currents through the rcd have been different). By careless handling of electrical wiring. Here is a classic example.

Man drills the wall, leaning bare foot on the battery, and gets into the live wire. Current passing through the chain 'metal casing drill – arm – chest – leg – the battery' cause paralysis of the heart and / or respiratory arrest. But if there is a ust, it just 'feels' that part of the current did not come back (the part that went through the man and went into the battery). Voltage will be turned off so rapidly that the troubles will not happen.