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The German Gasschutzhaube was one of the first masks that was made for soldiers with head injuries during the First World War.
Overview[]
The mask is an impregnated leather or canvas hood with the eyepieces and valve housing of the GM17. The celluloid lenses have an inner frame to make them stronger. The inlet is in the front, and there are no valves. Because of that, the user has to exhale through the filter. There is a string on the neck part of the hood to make a proper seal.
Filter[]
Used the same Model 11/11 filter what the GM17 did.
This later filter was updated to be more effective against new chemical agents, it appeared in the last years of the war. The steel canister now contains 3 layers separated with steel sieves. The first layer is activated charcoal soaked with 40% potassium carbonate just like in the Model 1915. The next, the middle layer, is pure activated charcoal. The third layer contains diatomite soaked with 40% potassium carbonate, hexamine and piperasine.