The other stains look deep-poulticing work with hydrogen peroxide. crapshoot.
 
Oh Man-Klenztone is awesome for cleaning really dirty stone. It is an amazing product that cleans deep. Apply the different formulations straight let sit for 10 minutes or so and rinse off using a brush, fresh water.
Follow instructions-protect well.
I have watched it pull dirt that nothing else would budge.  


On Thu, Nov 15, 2012 at 9:12 PM, Tim @ Classic Marble Restoration <marblerenu@aol.com> wrote:
Hey Mike,
I just "found out" about Klenztone. Tell me why you like it.

Tim Lesnar
Classic Marble Restoration
763-784-2483 office
612-250-0041 cell

Mike Marsoun wrote:

Hi Guys. I'm doing samples, testing cleaners, it is an Indian sandstone. It has to be100% clean because it will get sealed with a RJSC coating. The best cleaner was Klemztone (no surprise) but it still did not get out some stains. Any ideas on a system to remove these before or after the cleaning.


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--
Regards,
Stu Rosen
201-446-1200
www.mbstonecare.com 
www.mbstone.com
www.stoneshine.com
"EVERYTHING MATTERS "