CFR 40-1065.520-2014 Protection of Environment. Part1065:Engine-testing procedures. Section1065.520:Pre-test verification procedures and pre-test data collection.
(a) For tests in which you measure PM emissions, follow the procedures for PM sample preconditioning and tare weighing according to § 1065.590.
CFR 40-1065.520-2014 history
2014CFR 40-1065.520-2014 Protection of Environment. Part1065:Engine-testing procedures. Section1065.520:Pre-test verification procedures and pre-test data collection.