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specifications of centrifuge
Hi everyone,
Can you please advise what specifications you follow when you want to test emulsion stability by centrifuge? Meaning do you heat your sample before centrifuge, what rpm and for how long?
Any references/guideline to the specs would be highly appreciated -
1 Reply
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it depends strongly on the centrifuge you are having in your laboratory
the force in bigger ones is higher than in smaller ones. although the angel is important for the force on the sample.
I would normally use 4000rpm for 15 to 20 minutes depending on the Formulation for creams and 2000 for Tenside Systems
I would do it at Room Temperature.
Centrifuge Stability is just a hint for Storage stability the Interpretation of what is stable in Storage should not only come from the centrifuge test.
hope that helps a littel.
Tobias
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