Removing Silica Water Stains Finishing
Jan 27, 2008· SODIUM HYDROXIDE(LYE) DISSOLVES SILICA. I CLEAN MY ARTIFACTS THAT ARE COVERED WITH SANDSTONE IN A SOLUTION OF: 1 TBL SPOON SODIUM HYDROXIDE(LYE) and 2 CUPS WATER. I UP THE RATIO PER GALLON OR BY DIFFICULTIES IN THE PIECE. 20X FASTER THEN WATER ALONE.