This is a common question we get asked when customers are looking to seal and preserve their metal detecting finds. There are two areas to consider which are the desired finish and the level of protection, these will determine which option you choose and an overview is covered in our FAQ page.
Whats the difference?
The 10% solution is ideally used for artefacts with a nice smooth stable finish, such as the George V coins in our Instagram reels, the coating is thinner, dries quicker and provides a nice soft gloss finish.
The 20% solution is a higher concentration, so takes a little longer to fully cure but does provide a higher level of consolidation and is better on more porous artefacts with a rough or crumbling finish, or any artefact that would benefit with a slightly thicker coating. The finish is the same soft gloss finish, and if used on coins the 20% may look a little glossier.
Best Starter Option!
A good option if you want to try both is to purchase the twin 50ml pack which includes 10% and 20% and you can see which you prefer.
Portable Antiquities Scheme
PAS suggest using a lighter 3% solution and applying 2-3 coats for those who wish to use a minimal amount of protection on their finds. This option will be available in our store shortly.
We don't advise using multiple coats as the second coat (containing acetone) will immediately start to dissolve the first coat and the resulting finish can look a little patchy.
Completely Reversible
At the end of the day the coating is completely reversible using neat acetone to dissolve and wipe off any traces of the original coating, this is safe to do and will return your artefact to its original uncoated condition.
If you have any other questions just let us know.