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.
Marble test water treatment.
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.
Water treatment review 46 calcium carbonate saturation water is considered stable when it is just saturated with calcium carbonate.
There are two ways to determine calcium carbonate saturation.
In this condition it will neither dissolve nor deposit calcium carbonate.
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.
To conduct this part of the test follow these steps.
Years ago the marble test was used as a measure of a water balance.
This same test needs to be conducted for petroleum or oil based products you may use on a regular basis.
Pour a bit of water on the counter.
Perform a simple water test to see if your granite countertops need to be sealed.
Wipe up the liquid.
A sample of water shaken with finely ground marble then filtered was analyzed for hardness and alkalinity before and after.
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.
The results of darkened slab tells you that water based liquids can soak in damaging and staining your marble or granite.
The marble test and the langelier index.