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Measuring Viscosity of Thick Creams & Balms
Dear Chemist Corner,
I am having difficulty measuring the viscosity of thick creams and balms. I am using a Brookfield LV series viscometer (with Spindle 4) and receive slip / variation in the reading at the 3 lowest speeds. I am considering using an incubator to store the samples at an elevated temp (30 degree C) for 12 hours prior to taking readings. I assume the viscosity may not increase at a linear rate but I assume it would be beneficial to reference against previous batches (measured under the same conditions).
Is there a simpler solution to this challenge?
What methods does this community use for measuring thick creams?
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3 Replies
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Variation should be expected if you change the speed. I don’t understand the problem.
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Helipath drive motor and a
T-bar spindle. Check the link below -
Das - slip / variation within each of the 3 lowest speeds. It appears to be from “channeling”.
Thank you Maka; that appears to be the solution.
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