This testing was done by Dennis N Crouse chemist and author of Prevent Alzheimer's Autism and Stroke with 7 Supplements 7 Lifestyle choices and a Dissolved Mineral
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This is an update to the table in Chapter 5 of my husband's book. He tested 3 more silica supplements.
The conclusion again is the most bioavailable form of OSA (orthosilicic acid) is mineral water.
OSA is effective at removing aluminum from our bodies.