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ASTM E1235-2008 航天器在环境受控范围内的不挥发残留物重量分析测定的标准试验方法

ASTM E1235-2008 航天器在环境受控范围内的不挥发残留物重量分析测定的标准试验方法

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【英文标准名称】: Standard Test Method for Gravimetric Determination of Nonvolatile Residue (NVR) in Environmentally Controlled Areas for Spacecraft
【原文标准名称】: 航天器在环境受控范围内的不挥发残留物重量分析测定的标准试验方法
【标准号】: ASTM E1235-2008
【标准状态】: 现行
【国别】: 美国
【发布日期】: 2008
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: E21.05
【标准类型】: (Test Method)
【标准水平】: ()
【中文主题词】:
【英文主题词】: gravimetric determination; nonvolatile residue; Acid decomposition; Aerospace applications; Contamination--aerospace materials/applications; Environmental control/fate--aerospace applications; Gravimetric determination; Mass per unit area; Nonvolatile re
【摘要】: The NVR determined by this test method is that amount that can reasonably be expected to exist on hardware exposed in environmentally controlled areas. The evaporation of the solvent at or near room temperature is to quantify the NVR that exists at room temperature. Numerous other methods are being used to determine NVR. This test method is not intended to replace methods used for other applications.1.1 This test method covers the determination of nonvolatile residue (NVR) fallout in environmentally controlled areas used for the assembly, testing, and processing of spacecraft. 1.2 The NVR of interest is that which is deposited on sampling plate surfaces at room temperature: it is left to the user to infer the relationship between the NVR found on the sampling plate surface and that found on any other surfaces. 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. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
【中国标准分类号】: V04
【国际标准分类号】: 49_14
【页数】: 13P.;A4
【正文语种】: 英语

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