ASTM E1458-12(2022)
Standard Test Method for Calibration Verification of Laser Diffraction Particle Sizing Instruments Using Photomask Reticles

Standard No.

ASTM E1458-12(2022)

Release Date

2022

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM E1458-12(2022)

Scope

1.1 This test method describes a procedure necessary to permit a user to easily verify that a laser diffraction particle sizing instrument is operating within tolerance limit specifications, for example, such that the instrument accuracy is as stated by the manufacturer. The recommended calibration verification method provides a decisive indication of the overall performance of the instrument at the calibration point or points, but it is specifically not to be inferred that all factors in instrument performance are verified. In effect, use of this test method will verify the instrument performance for applications involving spherical particles of known refractive index where the near-forward light scattering properties are accurately modeled by the instrument data processing and data reduction software. The precision and bias limits presented herein are, therefore, estimates of the instrument performance under ideal conditions. Nonideal factors that could be present in actual applications and that could significantly increase the bias errors of laser diffraction instruments include vignetting4 (that is, where light scattered at large angles by particles far away from the receiving lens does not pass through the receiving lens and therefore does not reach the detector plane), the presence of 1 This test method is under the jurisdiction of ASTM Committee E29 on Particle and Spray Characterization and is the direct responsibility of Subcommittee E29.02 on Non-Sieving Methods. Current edition approved Feb. 1, 2022. Published April 2022. Originally approved in 1992. Last previous edition approved in 2016 as E1458 – 12 (2016). DOI: 10.1520/E1458-12R22. 2 Bohren, C.F., and Huffman, D.R., Absorption and Scattering of Light by Small Particles, John Wiley and Sons, New York, 1983. 3 van de Hulst, H.C., Light Scattering by Small Particles, Dover Publications Inc., New York, 1981. 4 Hirleman, E.D., Oechsle, V., and Chigier, N.A., “Response Characteristics of Laser Diffraction Particle Sizing Systems: Optical Sample Volume and Lens Effects,” Optical Engineering, Vol 23, 1984, pp. 610–619. E1458 − 12 (2022) 2 nonspherical particles, the presence of particles of unknown refractive index, and multiple scattering. 1.2 This test method shall be used as a significant test of the instrument performance. While the procedure is not designed for extensive calibration adjustment of an instrument, it shall be used to verify quantitative performance on an ongoing basis, to compare one instrument performance with that of another, and to provide error limits for instruments tested. 1.3 This test method provides an indirect measurement of some of the important parameters controlling the results in particle sizing by laser diffraction. A determination of all parameters affecting instrument performance would come under a calibration adjustment procedure. 1.4 This test method shall be performed on a periodic and regular basis, the frequency of which depends on the physical environment in which the instrumentation is used. Thus, units handled roughly or used under adverse conditions (for example, exposed to dust, chemical vapors, vibration, or combinations thereof) shall undergo a calibration verification more frequently than those not exposed to such conditions. This procedure shall be performed after any significant repairs are made on an instrument, such as those involving the optics, detector, or electronics. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 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 E1458-12(2022) Referenced Document

• ASTM A340 Standard Terminology of Symbols and Definitions Relating to Magnetic Testing
• ASTM D123 Standard Terminology Relating to Textiles*， 2023-09-14 Update
• ASTM D3244 Standard Practice for Utilization of Test Data to Determine Conformance with Specifications
• ASTM E1187 
• ASTM E131 Standard Definitions of Terms and Symbols Relating to Molecular Spectroscopy
• ASTM E135 Standard Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
• ASTM E284 Standard Terminology of Appearance
• ASTM E456 Standard Terminology for Relating to Quality and Statistics
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
• ASTM E799 Standard Practice for Determining Data Criteria and Processing for Liquid Drop Size Analysis

ASTM E1458-12(2022) history

• 2022 ASTM E1458-12(2022) Standard Test Method for Calibration Verification of Laser Diffraction Particle Sizing Instruments Using Photomask Reticles
• 2012 ASTM E1458-12(2016) Standard Test Method for Calibration Verification of Laser Diffraction Particle Sizing Instruments Using Photomask Reticles
• 2012 ASTM E1458-12 Standard Test Method for Calibration Verification of Laser Diffraction Particle Sizing Instruments Using Photomask Reticles
• 1992 ASTM E1458-92(2001) Standard Test Method for Calibration Verification of Laser Diffraction Particle Sizing Instruments Using Photomask Reticles
• 2001 ASTM E1458-92 Standard Test Method for Calibration Verification of Laser Diffraction Particle Sizing Instruments Using Photomask Reticles