| http://www.w3.org/ns/prov#value | - Additives such as surfactants and charge control agents present in the suspending fluid may also be included in the external phase to prevent any tendency for such additives to migrate from the suspending fluid into the external phase. [0062] However, although the liquid external phase preferably has substantially the same composition as the suspending fluid, it will usually be desirable for the e
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