A micron is a unit of measurement used to determine the thickness of a label, adhesive or liner. 1 micron is equal to a one millionth of a meter (or one thousandth of a millimeter).
Glossary
MIL-STD-202G
MIL-STD-202G (Note 12, Method 215K) tests to verify that component markings will remain legible and color coding will not fade after exposure to solvents and processes typically used to remove solder flux, fingerprints, and other contaminants from printed conductors, contact blocks, etc.
• DERAY MTSR
MIL-STD-883E
MIL-STD-883E Note 4, Method 2015.13 – establishes universal methods, procedures, and controls for testing microelectronic devices suitable for use in military and aerospace systems. Method 2015.11 refers to solvent resistance.