external phase


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Related to external phase: internal phase

external phase

[ek′stərn·əl ′fāz]
(chemistry)
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The Ti series also includes a newly developed "full intensity" external phase contrast system, which is built into the microscope body, rather than in the objective lens, thereby producing very little light loss.
The second phase involves an external aqueous isotropic phase of a surfactant, an external phase of a second topically active compound in addition to an optional solute.
Additional new features include a "full intensity" external phase contrast system, which is incorporated into the microscope body, rather than in the objective lens, thereby producing very little light loss.