If you have some NanoFoil® on hand at your facility and you do not have the original packaging, all hope is not lost. We can quickly figure out what it is with a set of calipers and a quick visual inspection.
First, note the appearance of the foil. If the foil is shiny and mirror-like, it is bare NanoFoil®. The other option is plated NanoFoil®, which will appear silver to light gray, but with a matte finish. Plated NanoFoil® is most commonly coated with around 10um of pure tin per side.
Second, measure the thickness of the foil with a set of calipers. Most NanoFoil® is provided in one of three thicknesses: 40um, 60um, and 80um. Take your measurement and round down to the closest foil size. It may not be exact, and remember that plated foil generally adds 20um to the overall thickness.
If you are still unsure what you have, simply contact us and we can look up what has been ordered in the past.
* This post is part of the NanoFoil® Do-It-Yourself Tips and Tricks series