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Miracle Sealants


Internet # 100672861

32 oz. Fast-Acting Phosphoric Acid Cleaner

This item has been discontinued.
The Home Depot no longer carries this specific product.

$11.49 /quart





Internet # 100672861

The Miracle Sealants 32 oz. Fast-Acting Phosphoric Acid Cleaner is designed for pre-cast concrete, flamed and honed granite, tumbled and honed marble and more. Designed for interior and exterior use. The cleaner works to remove grout and mortar residue, hard water deposits and rust.

  • Easy to use
  • Not for polished surfaces
  • Interior and exterior use
  • Cost effective
  • Concentrated formula

Info & Guides

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Product Size (oz.) 
Cleaning Features 
Compatible Floor Type 
Product Form 
Professional/ Residential 
Stain Type 
Surface Type 
Where to Use 
Warranty / Certifications
Certifications and Listings 
No Certifications or Listings 
Manufacturer Warranty 
See for complete warranty information 


Rated 3.8 out of 5 by 18 reviewers.
Rated 5.0 out of 5.0 by Another good product for cleaning rusty motorcycle gas tanks Here is another good available product to clean out rusty gas tanks on motorcycles, ATV's,scooters, go-karts etc....... 1 bottle will do most rusty gas tanks motorcycle size.... Be careful and research on google safety requirements and disposel methods of used acid.... Also flush tank out really well with clean water and then add a half box of baking soda to fuel tank and fill with water half way and slosh around good to neutralize acid, flush again with clean water, dry as best as can , then dry even more with MEK, Acetone.... Tank will not rust easily after all this, phosphoric acid treats metal to slow rust process down....... cheers! July 31, 2012
Rated 1.0 out of 5.0 by Didn't work in removing hard water stains on my brick Didn't work in removing hard water stains on my brick July 28, 2015
Rated 4.0 out of 5.0 by Mineral Buildup gone! We had a stone shower with terrible mineral stains on the slate tile when we moved in to our home. It took two treatment to remove all of it, but I was so pleased with the results. I truly thought we would have to replace the tile, nothing else even came close to getting the residue off the slate. Follow the directions and make sure to keep the area well ventilated. July 8, 2014
Rated 5.0 out of 5.0 by safer to use indoors I used it to clean concrete floor prior to installing porcelain tiles. I cut it with a bit of water and it cleaned the floor real well. It was not a very strong odor with a fan running and a window open. Actually pretty tame and I felt much safer than if using muriatic acid. September 6, 2012
Rated 4.0 out of 5.0 by great product Bought this product ....easy to use.....and works as it says it does. Great product! March 10, 2015
Rated 5.0 out of 5.0 by great product this is the best product to get water stains of.i have tried everything and this is so easy you wipe it on and leave depending how bad .about a hour and rinse hard work February 3, 2015
Rated 5.0 out of 5.0 by Great Product! My church's rest room has kind of old strong water stain on Toilet bowls. Many trials with many other products have no result except this Cleaner. Just enjoy it! April 27, 2013
Rated 4.0 out of 5.0 by Great product but do not dilute as recommended I was able to remove about 80% of the efflorescence from the concrete patio. Great start, but I will go at it again with a higher concentrate. I would recommend this product! August 5, 2014
  • 2015-10-03T12:06:35.635-05:00
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