ISO 20492-3:2010规定了中空玻璃装置的两种试验方法，包括气体泄漏率的测定和气体浓度公差的测定。这两种方法分别被指定为方法1（拟用于北美等市场）和方法2（拟用于欧洲等市场）。

ISO 20492-3:2010 specifies two methods of test for insulating glass units, including a determination of the gas leakage rate and a determination of gas concentration tolerances. The two methods designated as approach 1, which is intended for use in markets such as North America, and approach 2, which is intended for use in markets such as Europe.