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Determination of chlorine-containing preparations in the water of washing baths

Monitoring the use of chlorine-containing substances for disinfection (bleach, chloramine, etc.) is carried out in the water of washing baths using indicator paper soaked in potassium iodide starch.

The course of determination. A strip of indicator paper is lowered into the water of the washing bath. If there is chlorine in the water, the wetted piece of paper turns dark blue. The color of the paper does not change from ordinary tap water.
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Determination of chlorine-containing preparations in the water of washing baths

  1. Determination of the concentration of alkaline detergent in the water of washing bathtubs and machines
    For analysis use a special graduated test tube with a lower mark "A" and the upper "B". The course of determination. To the bottom mark “A”, 10 ml of test water is poured and 2 drops of a 1% solution of phenolphthalein are added. Alkaline water turns pink-red. After that, 0.1 N HCl solution was added dropwise, stirring the contents of the tube all the time. If liquid
  2. Determination of water temperature of washing bathtubs and machines
    The temperature of hot water during the processing of dishes for the purpose of disinfection is carried out with a thermometer with a scale of up to 100 ° C 5 times for 30 minutes. The first measurement is carried out suddenly, without warning. Rinsing dishes with hot water below 65 ° C is a risk factor for the spread of infectious
  3. Determination of the content of active chlorine in chlorine-containing disinfectants
    Chlorine-containing disinfectants are considered suitable for use with an active chlorine content of at least 15%. The course of determination. A weighed portion of a chlorine-containing disinfectant weighing 1 g is ground in a mortar with a small amount of water, then transferred to a 100 ml flask, add water to 100 ml, shaken, put in a dark place for 30 minutes. For research, take a conical flat
  4. Hygienic requirements for drinking water, pool water. Water protection
    Drinking water must comply with GOST and meet the following requirements: * Physical properties - water must be colorless, odorless and tasteless, transparent, have a certain temperature (7-12 °) and have a refreshing effect. * Chemical - drinking water must have a constant chemical composition, not contain an excess of harmful salts, toxic substances and radioactive contaminants.
  5. Control over the processing of dishes, implements and equipment with chlorine-containing disinfectants
    Dishes, cutting boards, shovels, shelving, etc., processed using solutions of chlorine-containing preparations give a positive reaction with potassium iodide starch. The course of determination. A cotton swab moistened with a solution of potassium iodide starch, wipe the area (in the form of a 1x5 cm strip) of the subject. The appearance of a strip of brownish-blue color indicates the presence of chlorine.
  6. Monitoring the correct handling of personnel hands with chlorine-based disinfectants
    The hands of workers in contact with food can cause infectious diseases and food poisoning of a microbial nature. Therefore, before starting work, it is recommended to wash your hands thoroughly with soap and a brush and treat with a 0.2% solution of chlorinated preparations. The course of determination. To control the correct treatment of hands with chlorinated disinfectants, take a swab,
  7. About bathing in cold water
    [Bathing in cold water] favors those whose regime is perfect in every way. Age, strength and external data, as well as the season should be suitable for this. [Man] should not suffer from indigestion [of the stomach], vomiting, diarrhea, insomnia, and catarrh. Moreover, he should not be either a child or an old man; his body should be vigorous and proportional movements. Sometimes bathe
  8. Hygienic requirements for water
    Hygiene standards for drinking water: 1. Must be in sufficient quantity. Organoleptic properties 2. It must be transparent, colorless, without any foreign smell and taste, have a certain temperature and have a refreshing effect. Harmless in chemical composition 3. Have a definite and constant chemical composition without excess salts, free of toxic and
  9. About water
    We do not drink water now. In addition to a morning cup of boiling water - no more water during the day. You will want to drink, and even very much - but instead of water we will eat porridge. Porridge, even a little dry, contains about 80% water. If you are very tormented by thirst, then cook yourself more liquid cereals. “I understand that there is a fear of dehydration in me. I don’t know how to deal with it. Lissy say
  10. About water
    We do not drink water now. In addition to a morning cup of boiling water - no more water during the day. You will want to drink, and even very much - but instead of water we will eat porridge. Porridge, even a little dry, contains 70-80% of water. If you are very tormented by thirst, then cook yourself more liquid cereals. “I understand that there is a fear of dehydration in me. I don’t know how to deal with it. Lissy say
  11. About water and thirst
    There will be a thirst - almost everyone. These are your slags, hiding in secluded corners, will require their daily portion of water. Do not give. As much as you can endure thirst - this is at most - three to four days. Of course, do not let yourself dry - if you really feel like drinking, drink it. But in small sips and preferably clean water at room temperature. Do not just talk about the specifics of the hot climate!
  12. Child's need for drinking water
    Most babies receiving mother's milk on demand do not need extra fluid. From any other drink, even from specialized water, the crumb can hurt the baby. If you additionally give your child water or, especially, artificial milk mixtures, this can lead to a decrease or distortion of the sucking reflex. The fact is that when a baby sucks out
  13. Sanitary requirements for drinking water
    When assessing water for animals, they use the “Sanitary rules and norms for drinking water supply” (SanPin-10-124 RB-1999), approved by the chief sanitary doctor of the Republic of Belarus (10.19.99) and entered into force on 01.01.2000, as well as additions to them March 26, 2002. Drinking water should be safe in epidemiological and radiation terms, harmless in chemical composition and have
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