Micron Gold is very fine gold particles. My experience with it is with mining bentonite where we found very small gold particles mixed in with the bentonite. We could not find a cost efficive way to reclaim the small amount of gold.
The thickness of gold on a gold-filled watch varies, including on the same watch, as a gold-filled finish can vary in thickness. But generally, a gold-filled finish will be about 20-40 microns thick. A 20 micron gold-plate finish is a bit thinner than most filled-gold finishes but is more uniform. A 20 micron gold-plate finish will wear a long time and compares well with a gold-filled finish.
10 micron thickness plating (usually gold)
1 micron > 0.5 micron
18K Gold 5 Micron refers to a type of gold plating where the item is made of a base metal coated with a thin layer of 18 karat gold that is 5 microns thick. It is a cost-effective way to give a piece of jewelry a luxurious gold appearance, but the plating may wear off over time with use.
0.5 micron.
10 micron.
90 micron.
2 MICRON
Ofcourse 23 micron is thicker than 11 micron.
10 micron
10 micron.
Yes - a 5 micron will filter out much smaller particles than a 30 micron.