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ASTM E932-89(2002)

(Practice)

Standard Practice for Describing and Measuring Performance of Dispersive Infrared Spectrometers

Standard Practice for Describing and Measuring Performance of Dispersive Infrared Spectrometers

SIGNIFICANCE AND USE
This practice is intended for all infrared spectroscopists who are using dispersive instruments for qualitative or quantitative areas of analysis.
The purpose of this practice is to set forth performance guidelines for testing instruments used in developing an analytical method. These guidelines can be used to compare an instrument in a specific application with the instrument(s) used in developing the method.
An infrared procedure must include a description of the instrumentation and of the performnace needed to duplicate the precision and accuracy of the method.
SCOPE
1.1 This practice covers the necessary information to qualify dispersive infrared instruments for specific analytical applications, and especially for methods developed by ASTM International.
1.2 This practice is not to be used as a rigorous test of performance of instrumentation.
1.3 This standard does not purport to address all of the safety problems, 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.

General Information

Status
Historical
Publication Date
24-Aug-1989
ICS
17.180.30 - Optical measuring instruments
Technical Committee
E13 - Molecular Spectroscopy and Separation Science
Drafting Committee
E13.03 - Infrared and Near Infrared Spectroscopy
Current Stage
Ref Project

Relations

Replaces
ASTM E932-89(1997) - Standard Practice for Describing and Measuring Performance of Dispersive Infrared Spectrometers
Effective Date
25-Aug-1989
Replaced By
ASTM E932-89(2007) - Standard Practice for Describing and Measuring Performance of Dispersive Infrared Spectrometers
Effective Date
01-Dec-2007
Referred By
ASTM D7889-21 - Standard Test Method for Field Determination of In-Service Fluid Properties Using IR Spectroscopy
Effective Date
25-Aug-1989
Referred By
ASTM D6645-18 - Standard Test Method for Methyl (Comonomer) Content in Polyethylene by Infrared Spectrophotometry
Effective Date
25-Aug-1989
Referred By
ASTM D5576-00(2021)e1 - Standard Practice for Determination of Structural Features in Polyolefins and Polyolefin Copolymers by Infrared Spectrophotometry (FT-IR)
Effective Date
25-Aug-1989
Referred By
ASTM E1866-97(2021) - Standard Guide for Establishing Spectrophotometer Performance Tests
Effective Date
25-Aug-1989
Referred By
ASTM E1642-00(2016) - Standard Practice for General Techniques of Gas Chromatography Infrared (GC/IR) Analysis
Effective Date
25-Aug-1989
Referred By
ASTM E168-16(2023) - Standard Practices for General Techniques of Infrared Quantitative Analysis
Effective Date
25-Aug-1989
Referred By
ASTM E2056-04(2016) - Standard Practice for Qualifying Spectrometers and Spectrophotometers for Use in Multivariate Analyses, Calibrated Using Surrogate Mixtures
Effective Date
25-Aug-1989
Referred By
ASTM E1252-98(2021) - Standard Practice for General Techniques for Obtaining Infrared Spectra for Qualitative Analysis
Effective Date
25-Aug-1989
Referred By
ASTM D2144-07(2021) - Standard Practices for Examination of Electrical Insulating Oils by Infrared Absorption
Effective Date
25-Aug-1989
Referred By
ASTM D8470-22 - Standard Practice for Development and Implementation of Instrument Performance Tests for Use on Multivariate Online, At-Line and Laboratory Spectroscopic Based Analyzer Systems
Effective Date
25-Aug-1989
Referred By
ASTM E1421-99(2021) - Standard Practice for Describing and Measuring Performance of Fourier Transform Mid-Infrared (FT-MIR) Spectrometers: Level Zero and Level One Tests
Effective Date
25-Aug-1989
Referred By
ASTM E1655-17 - Standard Practices for Infrared Multivariate Quantitative Analysis
Effective Date
25-Aug-1989
Referred By
ASTM D7399-18 - Standard Test Method for Determination of the Amount of Polypropylene in Polypropylene/Low Density Polyethylene Mixtures Using Infrared Spectrophotometry
Effective Date
25-Aug-1989

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ASTM E932-89(2002) - Standard Practice for Describing and Measuring Performance of Dispersive Infrared SpectrometersASTM E932-89(2002) - Standard Practice for Describing and Measuring Performance of Dispersive Infrared Spectrometers
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ASTM E932-89(2002) - Standard Practice for Describing and Measuring Performance of Dispersive Infrared Spectrometers
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E 932 – 89 (Reapproved 2002)
Standard Practice for
Describing and Measuring Performance of Dispersive
1
Infrared Spectrometers
This standard is issued under the fixed designation E932; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope instrumentinaspecificapplicationwiththeinstrument(s)used
in developing the method.
1.1 This practice covers the necessary information to
4.3 An infrared procedure must include a description of the
qualify dispersive infrared instruments for specific analytical
instrumentationandoftheperformnaceneededtoduplicatethe
applications, and especially for methods developed by ASTM
precision and accuracy of the method.
International.
1.2 This practice is not to be used as a rigorous test of
5. Apparatus
performance of instrumentation.
5.1 For the purposes of this practice, dispersive instruments
1.3 This standard does not purport to address all of the
include those employing prisms, gratings, or filters to separate
safety problems, if any, associated with its use. It is the
infrared radiation into its component wavelengths.
responsibility of the user of this standard to establish appro-
5.2 For each new method, describe the apparatus and
priate safety and health practices and determine the applica-
instrumentation both physically and mechanically, and also in
bility of regulatory limitations prior to use.
terms of performance as taught in this practice. That is, the
2. Referenced Documents description should give numerical values showing the fre-
quency accuracy and the frequency and the photometric
2.1 ASTM Standards:
2
precision. State the spectral slit width maximum or slit width
E131 Terminology Relating to Molecular Spectroscopy
programifoneisused.Wherepossible,statethemaximumand
E168 Practices for General Techniques of Infrared Quanti-
2
minimum resolution if those data are a part of the instrument
tative Analysis
display. Show typical component spectra as produced by the
E387 Test Method for Estimating Stray Radiant Power
2
instrument to establish the needed resolution.
RatioofSpectrophotometersbytheOpaqueFilterMethod
5.3 If a computer program is used, describe the program.
E1252 Practice for General Techniques for Obtaining In-
2 Includetheprogramminglanguageandavailability,orwhether
frared Spectra for Qualitative Analysis
the program is proprietary to a manufacturer.
3. Terminology
6. Reference to this Practice in Standards
3.1 Definitions and Symbols—For definitions of terms and
6.1 Reference to this practice should be included in all
symbols, refer to Terminology E131 and Compilation of
3 ASTM infrared methods. The reference should appear in the
ASTM Standard Definitions.
section on apparatus where the particular spectrometer is
4. Significance and Use described.
4.1 This practice is intended for all infrared spectroscopists
7. Parameters in Spectroscopy
who are using dispersive instruments for qualitative or quan-
7.1 Dispersive infrared spectrometers have a source of
titative areas of analysis.
quasi-monochromatic radiation together with a photometer for
4.2 The purpose of this practice is to set forth performance
measuring relative radiant power. Accurate spectrometry in-
guidelines for testing instruments used in developing an
volvesalargenumberofinterrelatedfactorsthatdeterminethe
analyticalmethod.Theseguidelinescanbeusedtocomparean
quality of the radiant power passing through a sample and the
sensitivity and linearity with which this radiant power can be
1
This practice is under the jurisdiction ofASTM Committee E13 on Molecular measured. Assuming proper instrumentation and its use, the
Spectroscopy and is the direct responsibility of Subcommittee E13.03 on Infrared
instrumental factors responsible for inaccuracies in spectrom-
Spectroscopy.
etry are resolution, linearity (Practices E168), stray radiant
Current edition approved Aug. 25, 1989. Published October 1989.
2
power (Test Method E387), and cell constants (Practice
Annual Book of ASTM Standards, Vol 03.06.
3
Available from ASTM International Headquarters, 100 Barr Harbor Drive,
West Conshohocken, PA 19428.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E 932
E1252). Rigorous measurement of these factors is beyond the 9.2 wavenumber accuracy—the deviation of the average
scope of this practice, and a more practical approach is wavenumber reading of an absorption band or emission band
described for the accessible factors. from the known wavenumber of that band.
10. Natu
...

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4.1 This practice permits an analyst to compare the general performance of an instrument on any given day with the prior performance of an instrument. This practice is not necessarily meant for comparison of different instruments with each other even if the instruments are of the same type and model. This practice is not meant for comparison of the performance of one instrument operated under differing conditions.
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1.1 This practice describes two levels of tests to measure the performance of laboratory Fourier transform mid-infrared (FT-MIR) spectrometers equipped with a standard sample holder used for transmission measurements.  
1.2 This practice is not directly applicable to Fourier transform infrared (FT-IR) spectrometers equipped with various specialized sampling accessories such as flow cells or reflectance optics, nor to Fourier transform near-infrared (FT-NIR) spectrometers, nor to FT-IR spectrometers run in step scan mode.  
1.2.1 If the specialized sampling accessory can be removed and replaced with a standard transmission sample holder, then this practice can be used. However, the user should recognize that the performance measured may not reflect that which is achieved when the specialized accessory is in use.  
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1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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Standard Practice for Describing and Measuring Performance of Laboratory Fourier Transform Near-Infrared (FT-NIR) Spectrometers: Level Zero and Level One Tests

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.
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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.  
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ASTM E958-13(2021)(Practice)
Standard Practice for Estimation of the Spectral Bandwidth of Ultraviolet-Visible Spectrophotometers

SIGNIFICANCE AND USE
4.1 These practices should be used by a person who develops an analytical method to ensure that the spectral bandwidths cited in the practice are actually the ones used.
Note 2: The method developer should establish the spectral bandwidths that can be used to obtain satisfactory results.  
4.2 These practices should be used to determine whether a spectral bandwidth specified in a method can be realized with a given spectrophotometer and thus whether the instrument is suitable for use in this application. If accurate absorbance measurements are to be made on compounds with sharp absorption bands (natural half band widths of less than 15 nm) the spectral bandwidth of the spectrometer used should be better than 1/8th of the natural half band width of the compound’s absorption.  
4.3 These practices allow the user of a spectrophotometer to estimate the actual spectral bandwidth of the instrument under a given set of conditions and to compare the result to the spectral bandwidth calculated from data given in the manufacturer's literature or indicated by the instrument.
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1.1 This practice describes procedures for estimating the spectral bandwidth of a spectrophotometer in the wavelength region of 185 nm to 820 nm.  
1.2 These practices are applicable to all modern spectrophotometer designs utilizing computer control and data handling. This includes conventional optical designs, where the sample is irradiated by monochromatic light, and ‘reverse’ optic designs coupled to photodiode arrays, where the light is separated by a polychromator after passing through the sample. For spectrophotometers that utilize servo-operated slits and maintain a constant period and a constant signal-to-noise ratio as the wavelength is automatically scanned, and/or utilize fixed slits and maintain a constant servo loop gain by automatically varying gain or dynode voltage, refer to the procedure described in Annex A1. This procedure is identical to that described in earlier versions of this practice.  
1.3 This practice does not cover the measurement of limiting spectral bandwidth, defined as the minimum spectral bandwidth achievable under optimum experimental conditions.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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ASTM E932-89(2021)(Practice)
Standard Practice for Describing and Measuring Performance of Dispersive Infrared Spectrometers

SIGNIFICANCE AND USE
4.1 This practice is intended for all infrared spectroscopists who are using dispersive instruments for qualitative or quantitative areas of analysis.  
4.2 The purpose of this practice is to set forth performance guidelines for testing instruments used in developing an analytical method. These guidelines can be used to compare an instrument in a specific application with the instrument(s) used in developing the method.  
4.3 An infrared procedure must include a description of the instrumentation and of the performance needed to duplicate the precision and accuracy of the method.
SCOPE
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1.2 This practice is not to be used as a rigorous test of performance of instrumentation.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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.  
1.5 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.

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