Perform a simple water test to see if your granite countertops need to be sealed.
Lemon juice test for granite.
If calcite is present in excess amount then lemon juice droplets leaves white stain on top of kitchen granite surface it will indicate granite is not of high quality.
Pour a bit of water on the counter.
Having the smallest amount of calcite in your granite countertops will make them more susceptible to stains and markings due to a chemical reaction with acidic liquids like lemon juice.
Collect a sample of any stone you are considering.
The lemon and water test is a great simple way of finding out how your granite countertop will react to different stains and cleaning solutions.
A sample of your granite counter.
Cooking oil coffee sliced fruit e g.
For example you may be considering a certain granite for your kitchen counters.
If you notice dull spots where the lemon juice hit the surface you do not want this granite for your kitchen counter tops.
Note the time that you placed the water on the counter and time the water to see how long it takes to absorb the granite will darken.
Etching has nothing to do with sealing granite countertops or marble or travertine.
Approval of material granite slabs should be done by carrying out laboratory test in the laboratory.
There are 2 ways to test a granite countertop or any stone countertop for absorbency and also determine if the stone is mixed with calcite or other minerals that are sensitive to acidic spills.
The lemon juice and oil test will help you determine the suitability of any stone you are considering.
Sealing will not prevent.
Be sure to do the lemon juice test for sealing granite on the new replacement slab and any stone you intend to purchase prior to installation though and you ll avoid this type of granite care nightmare with your next installation.
And some granite may not be true granite but a mutt stone that maybe is mixed with calcite like marble and the surface will corrode or etch when exposed to acids like lemon juice coffee alcohol salad dressing etc.
Above are basically field test to find out the granite quality.
Comments for stains on black galaxy granite.
Line them up on a table or countertop dust them thoroughly then spill a few drops of lemon juice and cooking oil on each one of them.
This granite is mixed with calcite or other acid sensitive minerals and maintenance will be a nightmare.
Line them up on a table or countertop dust them thoroughly then spill a few drops of lemon juice and cooking oil on each one of them.
The lemon juice test is a simple but effective way to test a stone for porosity and acid sensitivity.
Collect a sample of any stone you are considering.
