Marble Acid Etching

Acid stains such as by a toilet bowl cleaner or battery acid cause what is known as etching on marble.

Marble acid etching.

Although they look a lot like stains an etch mark is a physical alteration to the marble s surface by the acid. This product is made with reagent grade chemicals. 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. 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.

Etch marks are commonly identified as water marks or stains. Lower than a 7 is on the acid side and higher than a 7 is on the basic side. These stains can be difficult to remove but not impossible. The etchant will darken austenitic grains attack sigma phases and show grain flow.

Marble etching occurs upon contact with acidic foods and drinks like coffee soda wine alcohol and when harsh products like bleach vinegar ammonia and most common brand name cleaners are used for cleaning marble. Here is a list of some surprising substances that can etch stone. So we paid visits to every marble topped bar and marble furnished ice cream parlor we could find cocking our heads to the side peering down long polished surfaces to examine the damage left by countless drippy. Etching is a corrosive chemical reaction that essentially eats at the marble.

Please note that scratch marks from sample preparation will also become apparent. Soda spill on limestone. A sealer helps prevent stains but does not stop acid etching said hunter dasch vice president of rose restoration 800 413 9893. Marble s reagent aka marble s etch is a metallographic etchant for etching 300 series austenitic stainless steels nickel and cobalt based superalloys.