Roger , I agree with Fred try to remove it by using an alkaline base stripper.

John E Freitag

Director

The Stone & Tile School

Office 407-567-7652

Cell 407-615-0134

jfreitag@thestoneandtileschool.com

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From: Fred Hueston [mailto:fhueston@gmail.com]
Sent: Friday, September 21, 2012 4:39 PM
To: Stone and Tile PROS Technical Support
Subject: RE: [sccpartners] Stain Removal

according to DuPont there quartz doesn't stain lol. try a stripper since grout release is usually acrylic based

On Fri, Sep 21, 2012 at 3:07 PM, stuart rosen <mail@stoneshine.com> wrote:

Honed or polished finish
Seems the honed can stain.

On Sep 21, 2012 2:16 PM, "Roger Konarski" <qm144@yahoo.com> wrote:

I have been asked by a fabricator for help on this problem. Quartz (manmade) top, they got DuPont™ StoneTech® Professional Grout Release on the quartz and now it is stained. Any recommendations on what to use to get it out?

Thanks, Roger Konarski

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Frederick M. Hueston PhD
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