Calcium phosphates
Found this in the local Fleet farm...
$26.00 for 50 lb. Probably cheaper in bulk at a grain elevator, but bag is easy to handle, and cheap enough for some home chemistry uses.
http://www.fleetfarm.com/detail/sprout-18-5-dicalcium-phosph...
![image.jpg - 2.1MB](http://www.sciencemadness.org/talk/files.php?pid=396167&aid=38018)
[Edited on 9-3-2015 by Bert]
Rapopart’s Rules for critical commentary:
1. Attempt to re-express your target’s position so clearly, vividly and fairly that your target says: “Thanks, I wish I’d thought of putting it
that way.”
2. List any points of agreement (especially if they are not matters of general or widespread agreement).
3. Mention anything you have learned from your target.
4. Only then are you permitted to say so much as a word of rebuttal or criticism.
Anatol Rapoport was a Russian-born American mathematical psychologist (1911-2007).
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