Method to measure the filtration performance of SCR/Urea filters J3245

The purpose of this SCR filter test method is to provide standardized methods for evaluation the filter characteristics of the SCR filter by bench test methods. This, combined with data obtained from application test, maybe used to establish standards of performance for filters when tested by these standard methods. Many variation in requirements of filtration to protect the SCR supply equipment on vehicles and variations in operational conditions make it difficult to specify meaningful “in-service” performance standards by which a filter may be judged. By the use of these standard test methods, test conditions are always the same, and comparison of the laboratory performance of filters may be made with a high degree of confidence. Once the requirement of a particular application are known, performance standards for suitable filters may be established by these test methods, and adequacy of performance of filters for the job may be determined. In order to achieve the highest degree of reliability of test results, the procedures and equipment must conform to those specified in this code. No minimum performance requirements for filters have been specified, since these are the responsibility of the user and manufacturer. Only the methods of determining, interpreting, and reporting performance characteristics are the proper province of this SAE Standard.