Astm E 1458 – 92 (Reapproved 2001) pdf free download

Standard Test Method for
Calibration Verification of Laser Diffraction Particle Sizing
Instruments Using Photomask Reticles1

This standard is issued under the fixed designation E 1458; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.