1. APPL1CATION AND FEATURE
The GM-III mask is a novel design gas mask, the canister of the
facepiece. When the ambient air is contaminated with chemical
biological and radiation agents, the mask can provide effective
protection to the wearer's respiratory organs, eyes and facial
skin. The mask is designed for use by military, police and civil
defense and can also be used in industry, agriculture, storehouse,
scientific research etc.
The mask is equipped with a drinking system. If necessary the
facepiece may be connected to a canteen by means of accessories to
enable the wearer to intake water or fluids in contaminated areas.
The flexibility of the facepiece is suitable. The elastic straps
have elasticity and can be adjusted at random to ensure a
comfortable, leak-free fit. Large triangular lenses are
manufactured from optical plastic and surface
treated specially. The lenses provide a wide visual field and
excellent optical properties and have good abrasion and sho-ok
resistance.
The canister is filled with impregnated carbon of good quality and
high efficiency filter paper and high efficiency filter paper and
can filter out toxic gases and particulate aerosol from the
influent air except carbon monoxide. The canister has a low
resistance, lightweight and long life.
2. Gas life:
Cyanogen chloride: not less than 50 minutes at 30 L/min.
(1) 5mg/L, 80-80% RH conditions.
Hydrocyanic acid: not less
than 50 minutes at 30L/min,3mg/L conditions.
(2) Ool mist penetration coefficient: not more then
0.005% at 30L/min
(3) Inhalation resistance: not more than 186 pa at
30L/min.
(4) Exhalation resistance: not more then 100 pa at
30L/min.
(5) Visual field: total not less than 75%,
binocular visual field not less than 30%.
(6) Weight: Complete set of mask app. 0.7kg.
(7) Storage life: more then 8 years.
3. USE AND MAINTENANCE
(1) The GM-III mask is divided into three sizes (small,
medium and large on the left lower part of the face blank
with a number:1(small), 2(medium) or 3(large). The user chooses a
suitable mask according to the user's head shape. If the user's
eyes after the mask has been worn are at the level of about10 mm
above the horizontal center line lf lenses, it is shown that the
selected size of the mask is suitable. If the eyes are above the
value of 10mm, the mask is too small. If the eyes are below the
value, the mask is too large.
(2) Use of drinking device. A special canteen cap should be
screwed previously to the canteen. When the wearer needs to drink
water, unscrew the protective covers from the canteen cap and the
water inlet valve, screw the ends of the connecting tube to the
canteen cap and the water inlet valve, actuate the water inlet
valve by hand to keep a suction tube in the mouth.
(3) The complete mask, particularly the lenses and the
expiratory valve, should be kept clean. If necessary the lenses and
the expiratory valve may be washed with clear water.
(4) The canister can diversities adsorption capacity for
toxic gases after it has absorbed the moisture. The closure cap and
the plug should usually be attached to the canister to pr-event the
ingress of moisture.
(5) The gas masks should be stored in a cool dry place. If
the masks are not in use for a longer time, a support should be
placed in each face blank to prevent the deformation. The facepiece
must not contact organic solvent.
Packing Information:
87x52x36cm/20pcs/ctn
Gross weight: 25kg/ctn
