Experimental Guidelines - DWS Sample Preparation


V) Equilibration


After inserting the cuvette with the sample into the sample holder, wait 10-15 minutes so that the temperature of the sample is the same as the temperature of the thermal chamber. Note also that some samples require a significantly longer equilibrium time because the stress induced from filling the sample into the cuvette needs to relax. This effect is called thixotropie and is common for highly viscoelastic samples.


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DWS Rheolab



[1] T.G. Mason, New fundamental concepts in emulsion rheology, Current Opinion in Colloid & Interface Science 4 (1999), 213-238


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