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Related to external phase: internal phase
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With most microencapsulation techniques the drug solubility in the external phase has to be minimal in order to yield microspheres with satisfactory drug loading.
At first, the internal phase was prepared at 60[degrees]C and added to the external phase at room temperature.
The residual noise measurement mode includes all the necessary functions to automatically measure noise on 2-port devices with an external phase shifter, either in RF or microwave frequencies.