For those of you who use hydrogen peroxide that is bought at a beauty supply: The peroxide now contains Phosphoric acid. You can still use it but its going to etch marble so be prepared to re polish<br clear="all"><div><br>
</div>-- <br><img src="http://www.stoneforensics.com/stone-detective.png" width="200" height="129"><div>Frederick M. Hueston PhD<br><a target="_top" href="http://www.stoneforensics.com" target="_blank">www.stoneforensics.com</a><br><a target="_top" href="http://www.stoneandtilepros.com" target="_blank">www.stoneandtilepros.com</a><div>
<a target="_top" href="http://www.safeandcompliant.net" target="_blank">www.safeandcompliant.net</a></div><div><br>Recommended stone care products  <a target="_top" href="http://www.stonecarecentral.com/?Click=2149" target="_blank">http://www.stonecarecentral.com</a></div>
<div><br></div><div><div><div>Many of my articles can be found at <a target="_top" href="http://www.stoneandtilepros.com" target="_blank">www.stoneandtilepros.com</a></div><div>Listen to my radio show   <a target="_top" href="http://www.blogtalkradio.com/drfred" target="_blank">www.blogtalkradio.com/drfred</a></div>
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<div>See my specialty products at  <a target="_top" href="http://www.godrfred.com" target="_blank">www.godrfred.com</a></div></div></div></div><br>