It's possible that you have some residual calcium carbonate scale on the walls that is contributing to the pH, TA and calcium.
You can go here to see demo videos of each of the tests. Just scroll down the list at the bottom to select the test you want to see performed.
Watch the
General Test Interferences:
Calcium Hardness Test [updated 3/10/10]
video, which shows how to do the calcium hardness test when there is copper present (or suspected) in the water.
You can go here to see demo videos of each of the tests. Just scroll down the list at the bottom to select the test you want to see performed.
Watch the
General Test Interferences:
Calcium Hardness Test [updated 3/10/10]
video, which shows how to do the calcium hardness test when there is copper present (or suspected) in the water.