ISO 19012-1:2013 Microscopes - Designation of microscope objectives - Part 1: Flatness of field/Plan

standard by International Organization for Standardization, 05/15/2013

Full Description

ISO 19012-1:2013 specifies the use of the marking Plan on microscope objectives, and defines the diameter of the sharp region of the primary image of a flat object surface. ISO 19012-1:2013 applies to visual observation using the combination of objective lens, tube lens and eyepiece, as specified by the manufacturer.

This marking is consistent with ISO 8578.