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Purpose
In order to be able to determine the magnitude and effectiveness of the barrier created by ClearBlue certain tests were necessary to be performed. These tests were repeated a number of times in order to show the consistency of the results. The tests are not complicated and can be duplicated inexpensively by most laboratories. The purpose of the calcium leaching tests was to determine the amount of reduction of calcium leaching from swimming pool plaster by treating the plaster with ClearBlue.
Testing Procedure Overview
Two treated and one untreated plaster samples were placed in separate containers containing water taken from the same source. The water was tested for baseline calcium content prior to the tests. It was then tested after the plaster samples had been added. The first test reading was after 24 hours and a separate second reading after 12 days. Each of these reading for each test was repeated three times. The water remained exposed to the air to simulate a swimming pool. The results are shown below.
Testing Procedure Overview
Two treated and one untreated plaster samples were placed in separate containers containing water taken from the same source. The water was tested for baseline calcium content prior to the tests. It was then tested after the plaster samples had been added. The first test reading was after 24 hours and a separate second reading after 12 days. Each of these reading for each test was repeated three times. The water remained exposed to the air to simulate a swimming pool. The results are shown below.
Conclusion
The lowest calcium level this test procedure could accurately measure was 15 parts per million (ppm). The water prior to adding the test samples measured 15 ppm. This represents a concentration of some value between "0" and "15" ppm. This is within the resolution of this particular test method. This value, know as the "bias" would be subtracted from the readings of the leachant water.
The conclusion is that no or very little (could not be measured) calcium leached from the treated samples. The calcium leaching test has been maintained for over two years. The 15 ppm remains unchanged.
The lowest calcium level this test procedure could accurately measure was 15 parts per million (ppm). The water prior to adding the test samples measured 15 ppm. This represents a concentration of some value between "0" and "15" ppm. This is within the resolution of this particular test method. This value, know as the "bias" would be subtracted from the readings of the leachant water.
The conclusion is that no or very little (could not be measured) calcium leached from the treated samples. The calcium leaching test has been maintained for over two years. The 15 ppm remains unchanged.
