Cache is a 1 litre sistema with log, pencil and a few small swaps.
Now consult with Mendeleev and read on. The cache is to be found at
9,8,92,45,8,10,78,74,8,9,8,92,45,78,74,8,78,74,8,9,8,92,45,8,10,34,23,7,90,75,8,10,90,75,7,53,10,7,53,10,14,54
You can check your answers for this puzzle on Geochecker.com.