Transcription of 2.2. PHYSICAL AND PHYSICOCHEMICAL METHODS
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2.2. PHYSICAL AND PHYSICOCHEMICAL METHODS
EUROPEAN PHARMACOPOEIA Clarity and degree of opalescence of PHYSICAL ANDPHYSICOCHEMICALMETHODS01/2008 CLARITY AND DEGREE OFOPALESCENCE OF LIQUIDSVISUAL METHODU sing identical test-tubes of colourless, transparent, neutralglass with a flat base and an internal diameter of 15-25 mm,compare the liquid to be examined with a referencesuspension freshly prepared as described below, the depthof the layer being 40 mm. Compare the solutions in diffuseddaylight 5 min after preparation of the reference suspension,viewing vertically against a black background.
2.2. PHYSICAL AND PHYSICOCHEMICAL METHODS 01/2008:20201 2.2.1. CLARITY AND DEGREE OF OPALESCENCE OF LIQUIDS VISUAL METHOD Using identical test-tubes of colourless, transparent, neutral glass with a flat base and an internal diameter of 15-25 mm, compare the liquid to be examined with a reference suspension freshly prepared as described below ...
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