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Buffer control during manufacturing
Good afternoon to all,
The product I am going to refer too is an air-care product (not cosmetic). However, the science behind it is very similar and applies here too.
By the way, I have learned very much being part of this blog. Thank you so much for creating it Perry.
In my water base, after adding water and preservatives, the buffer agents are added. First, citric acid aiming pH 3-4 and followed by trisodium citrate dihydrate aiming pH 5-5.5.
What would be the best way to correct these pH’s, in case of it is out of range during manufacturing?
For instance, if pH after citric acid is 5, I know I need to add more citric acid, but how much?
What would be the best approach for me to direct production to correct that? Add in percentage? Little by little? I am not sure how to do that?
How can I test that in the lab prior production in order to have these answered beforehand.
Thank you in advance,
Ericka.
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2 Replies
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It really depends on your production scale. For instance, if you were making a 50 gallon batch, it would not be difficult for me, or someone like me, to put together a system in which three pH sensors (majority voting system) controlled the inflow of citric acid solution, cutting it off when the required pH is reached. Basically three sensors, a pump, an electrically operated valve, and a programmable logic controller.
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Excellent suggestion Belassi.
Thank you.
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