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BULLETIN OF THE § 5 “3
U.S. BUREAU OF LABOR STAT'STICS -

No. 512

WASHINGTON

MARCH, 1930

CODE FOR IDENTIFICATION OF GAS-MASK CANISTERS
PURPOSE

1. The purpose of this code is to provide protection against accidental
 injuries arising out of misunderstandings in the identification
of suitable gas-mask canisters selected for use In connection with gas
masks worn by men who are required to enter atmospheres containing
 dangerous quantities of harmful gases, vapors, smokes, or mists
{singly or in combination) or dusts in combination with any of these.
By establishing a uniform practice those who may have occasion to
use gas masks will acquire a knowledge of the identification colors
and marks and will thus be assisted as much as possible in selecting
proper canisters for specific conditions encountered.
SCOPE

2. The requirements of this code apply to the identification of all
gas-mask canisters used to afford protection against harmful gases,
vapors, smokes, and mists, also dusts in combination with any of
these, whether in industrial plants, in mines, in connection with
public utility operations, in rescue work, in fighting fires, or in any
other similar endeavor, except as used in connection with military
activities.

APPLICATION

3. The manufacturers of gas-mask canisters falling within the
scope of this code shall see that all canisters of their manufacture are
properly colored and marked in accordance with these requirements
before they are delivered to their customers.
4. All who issue or use gas masks falling within the scope of this
code shall see that all gas-mask canisters purchased or used by them
are properly colored and marked in accordance with these requirements
 before they are placed in service and that the colors and markings
 are properly maintained at all times thereafter until the canisters
have completely served their purpose.

COMPLIANCE

5. In the interest of safety and uniformity, compliance with this
code is urged upon all manufacturers and users of gas-mask canisters.

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