So, after surfing the net, I have found several products that are above 90% Calcium Chloride but only a couple are available by shipping unless you live in the north. I was also looking for brands that had no heavy metal products or other junk. After reading another forum, ALL products have contamination and some do not disclose those.
However, I discovered that Tetra makes the purest, cleanest formula but cannot be easily obtained. ( http://www.tetrachemicals.com/index.asp?page_ID=1224 ). The best products are likely those for the food industry.
Dowflake has lower calcium chloride whereas Peladow is the pelleted form made by Dow which has a greater % CACL2. ( http://www.ice-melt-products.com/f/peladow.pdf ). The latter which is the same product called CForce (http://www.packandseal.com/p-5733-ca...50-lb-bag.aspx ) and can be acquired at big box stores at season.
Scottwood Industries has a product called Prestone Driveway Heat 50B-HEAT ( http://www.scotwoodindustries.com/brands/10/products/24 ) which is 90-92% CACL2 and shows no heavy metals which one can buy at Amazon. It is also found as Ice Melt ( http://www.homedepot.com/p/50-lb-Con...8#.Uce-9p3D_3g.) ****CHEAP**** but for which I can only locate in the upper US and they do not ship.
Lastly, there is this product, North American 50850 Extreme 7300 Salt, ( http://www.acehardware.com/product/i...LAID=615416390 ) which is suppose to be comparable to the other products. It too can be had at Amazon.
So, now I just have to make the decision of which one. Hope this helped anyone else looking for Calcium Hardness Increaser without chlorine additive.
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