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Metal / scurf - lime water stains

Potential risk assessment

¦ Corrosion is absent, cosmetic defect.

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Metal / scurf - lime water stains

  1. Metal / Scurf - Organic Residues
    Types of surface changes {foto26} Closure / hinge areas are clean Reason: Washing in open form. {foto27} Remains of blood in the area of ​​the circuit / hinge Reason: Washing in closed form. Often there are rust and / or blood. Immediately after surgery from the remnants of the operation (blood, proteins), from the remnants of salt, from the remnants of drugs. Origin and causes ¦ Drying
  2. Metal / scurf - remnants of process chemicals
    Depending on the size of the residue, the type of instrument and the nature of the surface, light to dark gray raids / blooms may appear as spots or dots. Their visibility can still increase after sterilization. Types of surface changes {foto28} Hollow handle with visible residues {foto29} Loading cart suitable for washing and rinsing ophthalmic instruments {foto30}
  3. Metal / plaque - silicates and other mineral compounds
    Types of surface changes {foto32} Typical silicate dyeing of the washing chamber and instrument surface due to the use of a cleaning agent containing silicates, or increased content of silicic acid in water {foto33} Typical silicate surface dyeing of instruments with steam sterilization due to increased silicic acid content completely desalted
  4. Metal / scurf blackening due to oxidation
    Types of surface changes {foto34} Sample - titanium tires: Left tire - new, from the factory. Right tire - after machine washing. Usually the color changes evenly. However, it can also be in the form of spots / various colors. {foto35} Clamp part: retainer and ring area {foto36} Wound hook with black painted hardened Cr steel core and the remaining clean handle and sheet of
  5. Metal / scurf - staining / discoloration of color plasma layers
    Types of surface changes {foto37} Example: black, TiAIN coated stamp. Motley brilliant color change or complete absence of coating with unchanged gold-plated components (end screw, springs) {foto38} Stamp: new Origin and causes Surface reaction under the action of cleaning solutions with addition of hydrogen peroxide and / or washing solution, for example, with high
  6. Metal / Corrosion - Rust and Rust / Secondary Rust
    Types of surface changes {foto58} Left - filter holder with partial corrosion Reason: severe rust damage of the sterilization chamber causes secondary corrosion / deposits нал Separate randomly scattered rust particles. ¦ Brown, usually locally limited sediment / rust buildup. ¦ In direct extensive contact with highly corroded tools as secondary
  7. Spots and their varieties
    Blur (macula). A blemish is a limited area of ​​discolored skin. The spot is level with the surrounding skin, it can not be palpated. Sometimes papules also look like spots, and inspection with side lighting helps to distinguish them. This may be important for the differential diagnosis of pigmented lesions. Sizes of spots can be any. Causes of stains: (1)
  8. Methods to improve the quality of drinking water. Disinfection of drinking water at centralized water supply and in field conditions
    There are many methods for improving water quality, and they make it possible to free water from dangerous microorganisms, suspended particles, humic compounds, from excess salts, toxic and radioactive substances and foul-smelling gases. The main purpose of water treatment is to protect the consumer from pathogens and impurities that can be dangerous to human health or have unpleasant properties (color, smell, taste
  9. The chemical composition of water. Water pollution: physical, chemical, bacteriological. The ability of water sources to self-purification
    The chemical composition of water. In nature, water almost always contains more or less mineral salts dissolved in it. The degree and mineral composition of water is determined by the nature of the soil or soils adjacent to aquifers or surface water sources. The amount of mineral salts contained in water is expressed in mg / l. Organic matter. Of these, the most important are
    Slime may form on the surface of the meat. The cause of meat mucus is the intensive development of mucus-forming microorganisms. Such microorganisms include various types of lactic acid bacteria, yeast and micrococci. On the dry surface of meat, the microbes that form mucus do not grow, the main conditions for their development are the presence of humidified areas, and a relatively high temperature.
  11. Surface changes, scaling, corrosion, aging, swelling and cracks
    In practice, over time, various medical instruments, starting from their surface, are subject to changes caused by chemical and / or physical effects. The reason for these surface changes, unless they have arisen directly during the application, is in most cases the tool processing technology. If a superficial change occurs to eliminate it and
  12. Poisoning with heavy metals
    John V. Graef, Frederick G. Lovejoy, Jr. (John W. Graef, Frederick H. Lovejoy, Jr.) Arsenic Source. Inorganic arsenic compounds - arsenic anhydride, arsenic anhydride, arsenite sodium and potassium - are part of the insecticides, poisons against rodents, fungicides, means to protect wooden products from rot, herbicides and solutions used in the manufacture
  13. Heavy metal exposure
    For the past eight years, the thirty-eight-year-old Sarah has experienced severe pain in the lower back and hip joints. She appealed to many doctors and specialists. She had antibodies to the nuclei of her cells. One doctor, who failed to explain the cause of the pain to her, nevertheless made a diagnosis: spondylitis with loss of mobility of the joints - a form of autoimmune arthritis. Analgesic and anti-inflammatory
  14. Metals
    The pollutants in question enter the food raw materials and products in the following ways: 1. In areas where metal or other ores are located, the soil is contaminated with the corresponding elements, and then plant products. The half-life of cadmium from the body is 13-40 years. The lethal dose of cadmium for humans is 150 mg / kg body weight. More than half of cadmium we get with
  15. Coating by spraying and in molten metals
    This section provides specific indicators of emissions of harmful substances during the application of anti-corrosion coatings, which are carried out: - by the electric arc method with the organization of metallization sites in special chambers, or in assembly (shop conditions) with the use of electrometallizers (hand-held electric arc machines of enhanced reliability, for example, EM-12M , EM-14 M, EM-17 M).
  16. Calculation of emissions of pollutants into the atmosphere from metal machining machines
    The calculation is carried out according to the “Methodology for calculating emissions (emissions) 3B into the atmosphere during the machining of metals (in terms of specific emissions)”. Metals, alloys, non-metals are machined. For the cold processing of materials using turning, milling, grinding, grinding, drilling and other machines. Characteristic feature of mechanical processes
  17. The main manifestations in the oral cavity are chronic intoxication with heavy metals.
    With mild toxic salts of heavy metals (lead, bismuth, mercury), catarrhal stomatitis usually occurs with areas of pigmentation of the mucous membrane (primarily the gingival margin). In severe cases, ulcerations develop, characterized by a persistent course. In addition to pain in the oral cavity, impaired salivation and a metallic taste, there is general weakness, apathy,
  18. Biological absorption of heavy metals in separate links of the plant-bee-bee-farming trophic chain
    Filippov A.S., Mikhailova A.I. Scientific adviser: Ph.D., associate professor Shakirova SS FGOU VPO "Ural State Academy of Veterinary Medicine", Troitsk. Recently, more and more often they suggest using bees in the system of environmental monitoring. The main argument is that bees actively collect nectar and pollen over a large area within a radius of 3 km, and contain heavy metals in their body.
  19. Forging - pressing, stamping production and heat treatment of metals
    The main processes during heat treatment of parts are: heating, quenching, surface cementation, tempering, nitriding, gas cementation, and bluing. At the same time, suspended substances, iron (II, III) oxide, carbon oxide, benzo (a) pyrene, sulfur dioxide, nitrogen (II) oxide, nitrogen dioxide, methane, hydrochloride (hydrochloric acid), sodium chloride, potassium chloride, barium and its
  20. Drinking water disinfection
    Disinfection of drinking water serves to create a reliable barrier to the transmission of infectious diseases by water. Water disinfection methods are aimed at the destruction of pathogenic and conditionally pathogenic microorganisms, which ensures the epidemic safety of water. Water is disinfected at the final stage of purification after clarification and bleaching before entering into
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