I have an oil in water emulsion in which more oil is dispersed in less amount of water, the oil is viscous in nature. the emulsion seems stable when kept in tubes while it the same seems unstable when stored in beakers. how is this possible?
Plz check whether beaker is reacting with the emulsion and also the storage conditions. If they are stored in different conditions then it will have its effect on the stability of emulsion
if the formulation ingredients can react with the container then there is a possibility
Environmental conditions play an important role in emulsion stability,
so only stability studies are performed to assess the stability of formulation in various environmental conditions.
you can refer ICH guidelines for stability testing of formulations .
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