Pharmaceutical Technology Editors

Articles by Pharmaceutical Technology Editors

We are making an emulsion using a high-shear in-line mixer. It?s a 60-gal batch, and it?s taking nearly an hour to get the results we?re looking for. We have tried changing the in-line mixer?s workheads to a two-stage configuration, but it doesn?t affect the mixing time. Where are we going wrong?

My drug failed a light-obscuration test, but after I filtered the drug for microscopic particle counting, I couldn?t see any significant particulate on the filter. What might have caused the failure, and why is it not visible?