Dear Janis:
About your query, there's no reason to run my little lemon juice (and oil) test on your tiles; nothing negative could ever come out. However, you will have to have a good quality stone color enhancer like MB-6 applied to them, as it was originally done by tour fabricator.
That (and the right cleaning products) is the only way to keep the “moody” nature of hone-finished black granite under control.
May I ask you now to please read and e-sign our Statement of Purpose at:
http://www.marblecleaning.org/purpose.htm?
:-)
Ciao and good luck,
Article ID: 201
Created On: Sun, Jul 15, 2007 at 8:53 AM
Last Updated On: Sun, Jul 15, 2007 at 12:00 AM
Authored by: Maurizio Bertoli [mail@mbstone.com]
Online URL: https://marblecleaning.org/knowledgebase/article.php?id=201