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Carbon dioxide is colorless and odorless and therefore not organoleptically detected by humans; it is 1.5 times heavier than air and usually accumulates in its lower layers, including in the zone of human respiration; in significant concentrations,

Air exchange is characterized by ventilation volume and multiplicity. The volume of ventilation is the amount of air introduced (or supplied) into the room within one hour. It is possible to determine both the required ventilation

The epidemiological end of the bacterial dust phase is associated with those types of microorganisms that do not lose viability upon drying. The resistance of pathogenic microorganisms to drying is very different. It is known that in the coarse-grained

Types of ventilation . By the method of supplying air to the room, natural and artificial (mechanical) ventilation are distinguished , and depending on the method of organizing air exchange, local, general and combined (local + general). Ventilation systems . The air entering the room is called

The filtration method of air inoculation consists in passing a certain volume of air through a liquid nutrient medium. The simplest is Dyakonov’s method, in which air (10-12 l) is passed through an electric aspirator through a

Artificial (mechanical) ventilation is the movement of air due to mechanical motivation using special devices – fans. Compared to the natural one, it is more effective due to significant pressure, and the inflow and exhaust are

1. Connect the device to the mains. 2. Place an open Petri dish with a dense nutrient medium on the disk. When determining the total bacterial contamination, 2% meat-peptone agar is used for inoculation; in determining staphylococci

The organization of air exchange in the departments of hospitals (except infectious) is carried out according to the following principle – to exclude or to limit as much as possible dangerous air flows from dirty

The air purity of the premises is assessed on the basis of determining the total number of microorganisms contained in 1 m3 of air (TMP) and the presence of sanitary-indicative microorganisms: pathogenic, coagulase-positive, hemolytic staphylococci,

Operating room air can be polluted not only by anthropoxins and microorganisms, but also by vapors of a mixture of narcotic anesthetics with oxygen, some of which are easily flammable under certain conditions (ether, cyclopropane,