Lemon Juice Test

Lemon Juice Test Images

Lemon Juice Test

Lemon Juice Test Description

Hi  
I am a wholesaler if Granite and (http://maplered.com) Marble based in Australia. I have just recieved a batch of Indian Jet Black when I put a cup with lemon juice on it on to the Granite (http://tanbrown.org) i noticed that there was a ring left which is lighter . I phoned the supplier and (http://maplered.com) he assured me that no AGER was applied only a clear resin made by tennax. What can be done about this problem.
 
Regards
Gareth.