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anionic polymers as buffers

Hi there,
In fighting to keep pH values in a nice stable range, has anybody here used polymers with acid functionalities to maintain a stable pH? I started looking around, and I see some commercialized cross-linked polystyrene sulfonate out there, but polyacrylate and polymethacrylate-based materials ought to do an even better job holding the pH in the slightly acidic range, while still being too big and bulky to make it into the plant tissue. Anybody seen anything like this?
 
Hi there,
In fighting to keep pH values in a nice stable range, has anybody here used polymers with acid functionalities to maintain a stable pH? I started looking around, and I see some commercialized crosslinked polystyrene sulfonate out there, but polyacrylate ought to do an even better job holding the pH in the slightly acidic range, while still being to big and bulky to make it into the plant tissue. Anybody seen anything like this?


What would neutralize the acidity of a "over-nitrifried" soil?
 
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