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The basic performance characteristics of greatest interest are airflow restriction or pressure drop, dust collection efficiency, dust capacity, and air cleaner structural integrity. This test code therefore addresses itself to the measurement of these parameters.

This test code is for laboratory use in determining the operating characteristics of air cleaners. It refers specifically to laboratory testing of oil bath, oil wetted, dry and multistage air cleaners. Other types should follow this recommended practice wherever applicable. Multistage types should be evaluated as a complete assembly although, if desired, a component stage can be tested separately in accordance with its individual type. This code contains alternate procedures and permits prescribing certain specific conditions of a lest. Therefore reported results of tests are not complete unless accompanied by statements, where applicable, of the specific conditions such as: (1) rated air flow, (2) prescribed air flow. (3) steady or variable airflow, (4) fine or coarse dust, (5) amount of (lust, and (6) maximum permissible restriction.

The basic performance characteristics of greatest interest are airflow restriction or pressure drop, dust collection efficiency, dust capacity, and air cleaner structural integrity. This test code therefore adresses itself to the measurement of these parameters.

The air cleaner test code has been established to cover dry type and oil bath air cleaners used on internal combustion engines and to present a uniform method of determining and reporting air cleaner performance.