General Chaptero (10)Oral drug products-Product Quality TestsOLIGOSACCHARIDE ANALYSISORDINARY IMPURITIESORALLY INHALED AND NASAL DRUG PRODUCTSORAL DOSAGE FORMS-PERFORMANCE TESTSOPHTHALMIC PRODUCTS—PERFORMANCE TESTSOPHTHALMIC PRODUCTS-QUALITY TESTSOPTICAL MICROSCOPYOPTICAL ROTATIONOSMOLALITY AND OSMOLARITY