1.1 本规程涵盖两个级别的测试，以测量实验室傅立叶变换近红外光谱仪的性能。本规程适用于短波近红外区域，约800 nm（12 500 厘米 –1 )至1100牛米（9090.91厘米 –1 ); 以及长波近红外区域，约1100 nm（9090.91 cm –1 )至2500牛米（4000厘米 –1 ). 本规程主要用于气体和液体的透射率测量，但广泛适用于反射率测量。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 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、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 这种做法允许分析员将实验室仪器在任何一天的一般性能与该仪器之前的性能进行比较。本规程不用于相互比较不同仪器，也不直接适用于专用过程FT-NIR分析仪。本规程要求使用与测试仪器兼容的检查样品，如所述 5.3 .

1.1 This practice covers two levels of tests to measure the performance of laboratory Fourier transform near infrared (FT-NIR) spectrometers. This practice applies to the short-wave near infrared region, approximately 800 nm (12 500 cm –1 ) to 1100 nm (9090.91 cm –1 ); and the long-wavelength near infrared region, approximately 1100 nm (9090.91 cm –1 ) to 2500 nm (4000 cm –1 ). This practice is intended mainly for transmittance measurements of gases and liquids, although it is broadly applicable for reflectance measurements. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 This practice permits an analyst to compare the general performance of a laboratory instrument on any given day with the prior performance of that instrument. This practice is not intended for comparison of different instruments with each other, nor is it directly applicable to dedicated process FT-NIR analyzers. This practice requires the use of a check sample compatible with the instrument under test as described in 5.3 .