Perform a simple water test to see if your granite countertops need to be sealed.
Marble test water treatment.
Sealing your countertop is probably the best way to protect it but before sealing it you should make sure it needs to be sealed.
Water which is just saturated with calcium carbonate or which is slightly supersaturated with calcium carbonate is considered stable and safe to release into the distribution system.
Wipe up the liquid.
Testing for oil based marble staining.
Put a few drops of mineral oil or water on your counter and leave it for a few minutes 4 minutes for the water and 10 for the mineral oil.
1 4 cup should be enough 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.
Both the langelier index and the marble test are laboratory tests which can determine the degree of calcium carbonate saturation in the water at the treatment plant.
This same test needs to be conducted for petroleum or oil based products you may use on a regular basis.
The marble test and the langelier index.
A sample of water shaken with finely ground marble then filtered was analyzed for hardness and alkalinity before and after.
Pour a bit of water on the counter.
Years ago the marble test was used as a measure of a water balance.
Test the marble with water or mineral oil.
The results of darkened slab tells you that water based liquids can soak in damaging and staining your marble or granite.
Water treatment review 46 calcium carbonate saturation water is considered stable when it is just saturated with calcium carbonate.