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YBB60452012: Tests for Hydrolytic Resistance of Glass Grains at 121 Degree C
YBB 60452012
YBB
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