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This is the first edition of CSA Z94.4.1, Performance of filtering respirators. This Standard is intended to support a national respirator certification program for Canada. CSA Group acknowledges that the development of this Standard was made possible, in part, by funding and support of the Standards Council of Canada. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.
This Standard specifies performance requirements for respirators that operate in the air filtering mode for filtering particulate matter.
This Standard does not address the following
In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
The values given in SI (metric) units are the standard. The values given in parentheses are for information only.
| SDO | CSA: Canadian Standards Association |
| Document Number | |
| Publication Date | Jan. 1, 2021 |
| Language | en - English |
| Page Count | 83 |
| Revision Level | |
| Supercedes | |
| Committee |
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