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Old 12-01-2017, 10:06 AM   #1
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Is My Countertop Dyed?

Dear Pros,
I ordered an Azul Macaubus quartzite slab that is blue in color. The person who fabricated the countertop and treated it with the sealant, says its dyed and this is the reason why his sealant left greasy blotches all over the countertop.
How can I check if it's really been dyed and the supplier lied to me?
If it has been, can a water-based sealant leave greasy stains on it?
Is there a way to remove the stains? Acetone didn't help.

Thanks a lot!
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Old 12-01-2017, 12:12 PM   #2
Tool Guy - Kg
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It'll take one of the stoner guys on the forum to tell you how you can figure out the dye issue. Sorry, can't help you with that.

Did you purchase the slab through the fabricator? If so, then this is an issue you need to take up with the fabricator. The buck stops with him or her. Not their supplier.

...However, if you bought the slab, then paid the fabricator to fabricate it, then you are much more on your own to correct this dye issue.

Tonto Goldstein….. but my friends call me Bubba
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Old 12-05-2017, 01:54 PM   #3
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The following is what I use to tell if the slab is dyed.

1. Take a white rag and pour some acetone on the rag and wipe. If you get no color transfer to the rag go to the next step

2. Take some MEK and pour it on another clean white rag and wipe the slab. If you get color transfer its dyed
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Old 01-25-2018, 01:05 PM   #4
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Check the underside for runs. Nearly all dyed stones will have visible runs on the bottom.
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Old 01-25-2018, 01:09 PM   #5
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P.s. I've never heard of quartz being stained. I don't think it's even possible. And it should not be sealed.
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