1 Scope
This standard specifies the basic requirements for chemical composition analysis of quartz glass, including sample preparation, method summary and principle, reagents and materials, instruments and equipment, analysis steps, result calculation and representation. This standard is applicable to the chemical composition analysis of quartz glass raw materials, quartz glass and products, quartz glass fibers and products
2 Normative References
The following documents are essential for the application of this document.
. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this documentPreparation of Standard Solutions for Impurity Determination in GB/T 602 Chemical Reagents
GB/T 6682 Specification and Test Methods for Analytical Laboratory Water
3 Basic Test Requirements
3.1 Water and Reagents
Unless otherwise specified, the reagents used in the analysis should not be lower than the analytical purity, and the water used should not be lower than the secondary water requirements specified in GB/T 6682.
The dilution degree of the reagent is expressed in volume ratio, as follows:- "Dilution V, → V," represents; Dilute a specific solution with a volume of V to a total volume of V. The final mixture of-- V,+V: "means adding a specific solution with a volume of V to a volume of V. In the solvent
3.2 Constant weight
After the first ignition, cooling, and weighing, repeat the ignition (each time for 20 minutes), then cool and weigh. When the difference between two consecutive weighing is less than or equal to 0.000 2g, it is considered constant weight 3.3 Standard stock solution
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