This website cuts through the B S about CS http://health2us.com
He sells CS makers.A little on the high side,but the best.Ionic silver is more bioavailable.
When you start making CS your distilled water makes the difference. You want your distilled water to be 1ppm or less.PPM/part per million.
Walgreens has the best if you buy it.Walmarts is 50/50 sometimes it good sometimes
the ppm over 1ppm.
The CS maker above has a built in ppm gauge.