ASTM E1944-98(2021) PDF

Scope: 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 shortwave near infrared region, approximately 800 nm (12 500 cm–1 ) to 1100 nm (9090.91 cm–1 ); and the longwavelength 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.

ASTM E1944-98(2021) Referenced Document

ASTM E1252 Standard Practice for General Techniques for Obtaining Infrared Spectra for Qualitative Analysis
ASTM E131 Standard Definitions of Terms and Symbols Relating to Molecular Spectroscopy
ASTM E1421 Standard Practice for Describing and Measuring Performance of Fourier Transform Mid-Infrared (FT-MIR) Spectrometers: Level Zero and Level One Tests*， 2021-09-01 Update
ASTM E168 Standard Practices for General Techniques of Infrared Quantitative Analysis
ASTM E932 Standard Practice for Describing and Measuring Performance of Dispersive Infrared Spectrometers

2021 ASTM E1944-98(2021) Standard Practice for Describing and Measuring Performance of Laboratory Fourier Transform Near-Infrared (FT-NIR) Spectrometers: Level Zero and Level One Tests
1998 ASTM E1944-98(2013) Standard Practice for Describing and Measuring Performance of Laboratory Fourier Transform Near-Infrared (FT-NIR) Spectrometers: Level Zero and Level One Tests
1998 ASTM E1944-98(2007) Standard Practice for Describing and Measuring Performance of Laboratory Fourier Transform Near-Infrared (FT-NIR) Spectrometers: Level Zero and Level One Tests
1998 ASTM E1944-98(2002) Standard Practice for Describing and Measuring Performance of Laboratory Fourier Transform Near-Infrared (FT-NIR) Spectrometers: Level Zero and Level One Tests
1998 ASTM E1944-98 Standard Practice for Describing and Measuring Performance of Laboratory Fourier Transform Near-Infrared (FT-NIR) Spectrometers: Level Zero and Level One Tests