Welcome to the eFile Express Minnesota Property Tax Refund Calculator! By answering a few brief questions, you can quickly see if you qualify for Minnesota's 2014 (or 2013) property tax refund -- and the amount of the refund if you do qualify.
Such etching is generally performed by immersion in a Nital solution containing nitric acid in a carrier solvent of alcohol with the acid concentration ranging from 1% up to about 10%. The active ingredient in Nital formulations, as the name implies, is nitric acid.
Just looking at the cards, you can see right away what was laser marked vs annealed. Annealing gives a rich black finish on 304 stainless steel (light reflection is making it look non-black in the photos) while marking doesnât â it can vary from dark brown to an almost light grey polished look.t the shop, we do a lot of steel tag laser marking and annealing so I thought it would be fun to cover the differences between these two distinctive processes but first, letâs take a look as a physical sample of each.