MF11 GAS MASK

1、          APPL1CATION AND FEATURE

   The MF 11 mask is a novel de-sign gas mask,the canister of the facepiece.when the ambientair is contaminated with chemi-cal biological and radiationagents,the mask can provid eeffective protection to the we-arer’s respiratory organs,eyesand facial skin. The mask is designed for use by military,police and civil defense and can also be used in industy,agriculture,storehouse,scien-tific research etc.

   The mask is equipped with adrinking system.If necessary the facepiece may be connected to a canteen bymeans of acces-sories to enable the wearer to intake water or fluids in cont-aminated areas. The flexibility of the facepiece is suitable.The elastic straps have elasti-city and can be adjusted at ra-ndom to ensyre a comfortable,leak-free fit. Large triangularlenses are manufactured fromoptical plastic and surfacetreated  specially. The lensesprovide a wide visual field andexcellent optical propertiesand have good abrasion and sho-ok resistance.

   The canister is filled with impregnated carbon of good qua-lity and high efficiency filterpaper and high efficiency filterpaper and can filter out toxicgases and particulate aerosolfrom the influent air exceptcarbon monoxide. The canisterhas 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 coeffi-cient: not more then 0.005% at 30L/min

(3)、Inhalation resistance: not more than 186 pa at 30L/min.

(4)、Exhalation resistanse: not more then 100 pa at 30L/min.

(5)、Visual field:total not less than  75%, binocular visualfield not less than 30%.

(6)、Weight: Complete set of ma-sk app . 700 grams.

(7)、Storage life: more then 8 years.

3、          USE  AND  MAINTENANCE

(1)、The  MF 11 mask is dividedinto three sizes (small,medium dan large on the left lower part of the faceblank with a number:1(small),2(medium) or 3(la-rge).The user chooses a suita-ble mask according to the use-r’s hesd shape. If the user’s eyes after the mask has been worn are at the level of about10 mm abmve the horizintal cen- ter line lf lenses , it si shownthat the seleced size of the mask is suitsble. 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 shouldbe screwed previously to the canteen .when the wearer needs to drink water ,unscrew the pr-otective covers from the cante-en cap and the water inlet val-ve,screw the ends of the conn-ecting tube to the canteen cap and the water inlet valve,act-uate the water inlet valve by hand to keep a suction tube in the mouth.

3、The complete mask, partic-ularly the lenses and the expi-ratory valve, should be keptclean. If necessary the lenses and the expiratory valve may be washed with clear water.

4、the canister can devreaseits adsorption capacity for to-xic gases after it has absorbed the moisture. The closure cap and the plug should ususlly beattached to the canister to pr-event the ingress of moisture.

5、The gas masks should bestored in a cool dry place. If the masks are not in use for a longer time, a support should be placed in each faceblank to prevent the deformation. The facepiece must not contace org-anic solvent.