INDICATOR CARTRIDGE FOR INDUSTRIAL FILTERING GAS MASK Russian patent published in 2025 - IPC A62B19/00 A62B18/08 A62B23/02 G01N31/22 

FIELD: devices, apparatus or methods for life-saving.

SUBSTANCE: invention relates to the field of devices, apparatuses or methods for life saving, namely to technical means of passive chemical detection of the end of service life of individual respiratory protection means of filtering type. Indicator cartridge for an industrial filtering gas mask comprises a housing and a bulk charge, wherein the cartridge body is made of an optically transparent cylindrical wall, bottom, roof, separating charge insert and connecting rivets, forming from one to six indicator windows, wherein the separating charge insert is made with a partition, an inner screen and an outer screen, the bottom is made with an inner screwed neck, a bottom screen and outer partitions, and on the roof there is an external screwed neck, wherein the mixtures include an indicator layer with chromogenic reagents applied thereon and a sorption-absorbing layer, wherein in the cartridge compartments, the lateral wall of which is formed by the outer partitions, the outer one - by the optically transparent wall, the inner one - by the bottom mesh and the liner mesh with the nonwoven material, the upper one - with the roof, the lower one - with the bottom, the indicator layer of the charge is placed, the partition and the inner screen of the insert separate the charge from the ambient air, and the outer screen of the insert and the screen of the bottom separate the indicator layer from the sorption-absorbing layer and the environment.

EFFECT: development of indicator cartridge for industrial filtering gas mask providing various coverage of target analytes and guaranteed reserve capacity.

6 cl, 5 dwg, 1 tbl