YY/T 0719.8-2019 Translated English of Chinese Standard. (YYT 0719.8-2019, YY/T0719.8-2019, YYT0719.8-2019): Ophthalmic optics - Contact lens care products - Part 8: Test method for detergent [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]This Part of YY/T 0719 specifies the test method to determine the content of Poloxamer or epoxy ethylene hydrogenated castor oil as active ingredient in contact lens care products. This Part is applicable to care products that the active ingredient of the detergent is poloxamer or epoxy ethylene hydrogenated castor oil. |
Common terms and phrases
0.25mL of iodine-potassium 1.0g of iodine 10mL volumetric flasks 2.0g of potassium accuracy of 0.1mg accurately add 0.25mL accurately add 1.0g accurately pipette 1mLof analytical balance balance with accuracy Calculate the content Chromatogram of poloxamer color developing solution Contact lens content of poloxamer curve and regression Determination and result dissolved epoxy ethylene hydrogenated ethylene hydrogenated castor filtrate GB/T gel chromatography HPMC hydrogenated castor oil iodide color developing iodine-potassium iodide color least 5 concentration lens care products method for detergent mobile phase nearest of 0.1mg nursing solution obtain the solution Ophthalmic optics poloxamer content Poloxamer Figure Poloxamer standard stock polyoxyethylene potassium iodide Preparation of standard preparation Poloxamer standard Reference substance refractive index detector regression equation result analysis Sample processing series of standard Set volume Shake sodium dihydrogen phosphate solution 0.1mg/mL Solution preparation Poloxamer solution this product standard curve standard solution Respectively standard stock solution surfactants Test method Test principle ultraviolet-visible spectrophotometry Weigh