Allocation of special self-rescuers will allow developers or to strengthen protective properties on demanded group of substances, or to reduce weight and dimensions of a product due to exception of superfluous components..

At variety of possible kinds of dangers it is necessary to create universal products, for example, self-rescuers for the population of a megacity. In this case at a substantiation of requirements the main role is got with gradation of possible situations on a degree of danger with the purpose of definition of a reasonable level of universality as maintenance of protection against the list of amazing factors is extremely a challenge. Most successfully such problem(task) could be solved at use of universal isolating self-rescuers, however such products demand special conditions of storage, recycling, preliminary training and training of users and consequently they can be recommended to application far not for all categories of the population.

Division of self-rescuers of a class of M on special and universal is carried out by the same principle. Thus it is necessary to note, that in small-sized products the establishment of a demanded degree of universality is connected with much greater difficulties. At a stage of a substantiation of requirements to such products constant contact to their potential manufacturers which to the full can estimate technical opportunities of creation of this or that product is es-pecially important. Noble aspiration to provide as it should not is possible to become the best universal protection a brake in creation let less effective, but real for creation and manufacture of useful products.

From the considered scheme it is visible, that self-rescuers of all classes and groups it is offered to divide on adult and children's. Such division is connected with necessity of the ac-count of age features of children. In our opinion, for children it is necessary to have self-rescuers not less than three kinds: for age from 7 till 14 years, from 3 till 7 years and less than 3 years. The specified gradation on age is caused by following reasons. Children of school age (7 years and more) can be trained and in a condition to use products which designs are similar with samples for adults, for example, correctly to use zagubnic, to arrange and fix somemask, etc. In this case children's products can differ from adults only in the sizes of the devices providing hermetic sealing on a line obturation, and if necessary and other elements of a design. For children of such age self-rescuers as S-, and M-classes can be made.