I run my reactor with the Apex and Trident. Its a 15 year old Knop S-IV reactor. I am using a Kamoer FXSTP continuous doser to keep the effluent steady, but a pinch valve can accomplish the same out of a manifold or with a pump. My Alk swings are in the order of 0.3dkh between 8.8 and 9.1...
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