Astm E56219 Pdf ^hot^ [ 2026 Edition ]

Superimpose a clear plastic test grid or eyepiece reticle with a regular array of points (typically a 100-point grid) over the image.

A standard reflected-light microscope (brightfield or differential interference contrast) capable of clear resolution at the required magnification. 2. Specimen Preparation Tools astm e56219 pdf

: Points falling entirely within a phase count as 1.0 ; points on a boundary count as 0.5 . Superimpose a clear plastic test grid or eyepiece