Etch marks are not stains.
Marble acid etching.
The etchant will darken austenitic grains attack sigma phases and show grain flow.
This product is made with reagent grade chemicals.
Although they look a lot like stains an etch mark is a physical alteration to the marble s surface by the acid.
Substances that contain acid ammonia and alcohol can etch marble meaning that the finish or the shine is removed if you accidentally spill one of these three substances.
Etch marks are commonly identified as water marks or stains.
Acid stains such as by a toilet bowl cleaner or battery acid cause what is known as etching on marble.
Please note that scratch marks from sample preparation will also become apparent.
Soda spill on limestone.
Here is a list of some surprising substances that can etch stone.
If needed a professional marble restorer can always be called to repair the damage.
Think of it like a burn that removes the finished.
When my husband and i were researching our kitchen renovation a couple years ago marble countertops were the clear frontrunner but we were nervous about the inevitable etching.
A sealer helps prevent stains but does not stop acid etching said hunter dasch vice president of rose restoration 800 413 9893.
Etching is a corrosive chemical reaction that essentially eats at the marble.
These stains can be difficult to remove but not impossible.
Lower than a 7 is on the acid side and higher than a 7 is on the basic side.