YBB 60452012 PDF EnglishUS$120.00 · In stock · Download in 9 seconds
YBB 60452012: Tests for Hydrolytic Resistance of Glass Grains at 121 Degree C Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
YBB6:---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/YBB6YBB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA Tests for hydrolytic resistance of glass grains at 121 °C Tests for hydrolytic resistance of glass grains at 121 °C This method is suitable for titration determination and grading of water resistance of various medicinal glass materials. This method is a material testing method. Take a certain amount of glass grains of a specified size. Place them in a specified container. Add a specified amount of water. Heat them under specified conditions. Determine the degree of erosion of the glass grain by titrating the leaching solution. Grade it. Instruments: High-pressure steam sterilizer, conical flask, beaker (Note: New flasks and beakers must be subject to aging treatment, that is, add an appropriate amount of water to the flasks and beakers; process them repeatedly according to the hot-pressing conditions specified in the test steps; it can be used only after the water is neutral to methyl red), oven, hammer, mortar and pestle made of quenched steel (see Figure 1), a set of stainless steel screens (including screen A: pore size 425 µm, screen B: pore size 300 µm , O screen: pore size 600 ~ 1000 µm). Figure 1 -- Mortar and pestle Test product: Crush the test product into pieces. Put an appropriate amount into the mortar. Insert the pestle. Use a hammer to hit the pestle only once. Transfer the glass in the mortar to the O sieve on the upper layer of the sieve set. Repeat the above operation process. Use a ...... Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. |
