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A respirator consisting of mask and replaceable canister filter through which air mixed with toxic vapor is drawn by the breathing of the wearer and in which the toxic elements are absorbed by activated charcoal or other material. A filter dedicated to the specific toxic gas must be used. Sometimes this equipment may be referred to as cartridge respirator. It should be noted that a canister filter respirator is not suitable for use in an oxygen deficient atmosphere.

Related Terms

SAFETY CONTROL

Device to stop unit, equipment or system if unsafe pressure and/or temperatures and/or dangerous conditions are reached.

AIR COOLER

A factory-encased assembly of elements whereby the temperature of air passing through the device is reduced.

BUBBLE POINT

The differential gas pressure at which the first steady stream of gas bubbles is emitted from a wetted filter element under specified test conditions.

AIR INFILTRATION

The leakage of air into a room through cracks in doors, windows, and other openings.

ARC

A flash, caused by an electric current ionizing a gas or vapor.

CLEAN ROOM

A facility or enclosure in which air content and other conditions (such as temperature, humidity, and pressure) are controlled and maintained at a specific level by special facilities and operating processes and by trained personnel.

OUTDOOR AIR

Air taken from outdoors and, therefore, not previously circulated through the system.

SPREAD

The divergence of the air stream in a horizontal or vertical plane after it leaves the outlet.

AIR

A substance containing by volume approximately 78 - 79% nitrogen; 20.95% oxygen, 0.94% argon, traces of carbon dioxide, helium, etc.

ACTIVATED CARBON

Is a specially processed carbon, used as a filter drier. Commonly used to clean air.
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