1.1这些试验方法包括以4.5 X 10的速率测试和定位气体泄漏源的程序 -13 摩尔/秒（1 X 10 -8 标准cm 3. /s） 或更大。该测试可在任何装置或组件上进行，在该装置或组件上可产生氦或其他合适示踪气体的压差，且待测试泄漏的流出物侧可用于使用质谱仪取样探头进行探测。 1.2描述了两种试验方法: 1.2. 1试验方法A -直接探测，以及 1.2.2 试验方法B -积累。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 These test methods cover procedures for testing and locating the sources of gas leaking at the rate of 4.5 X 10 -13 mol/s (1 X 10 -8 Std cm 3 /s) or greater. The test may be conducted on any device or component across which a pressure differential of helium or other suitable tracer gas may be created, and on which the effluent side of the leak to be tested is accessible for probing with the mass spectrometer sampling probe. 1.2 Two test methods are described: 1.2. 1 Test Method A -Direct probing, and 1.2.2 Test Method B -Accumulation. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.