Detailed Product Description

1. APPL1CATION AND FEATUREThe GM-I mask is a novel design gas mask, the canister of the face piece. 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 face piece 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 face piece 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 shook 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. 700 grams.(7) Storage life: more then 8 years. 3. USE AND MAINTENANCE(1) The GM-I 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 face piece must not contact organic solvent.