ASTM E463-21 PDF

Scope: 1.1 This test method covers the determination of silica in fluorspar from 0.5 % to 10 % by mass. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM E463-21 Referenced Document

ASTM D1193 Standard Specification for Reagent Water
ASTM E135 Standard Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
ASTM E276 Standard Test Method for Particle Size or Screen Analysis at No. 4 (4.75-mm) Sieve and Finer for Metal-Bearing Ores and Related Materials
ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ASTM E50 Standard Practice for Apparatus, Reagents, and safety Precautions for Chemical Analysis of Metals
ASTM E882 Standard Guide for Accountability and Quality Control in the Chemical Analysis Laboratory

2021 ASTM E463-21 Standard Test Method for Determination of Silica in Fluorspar by Silico-Molybdate Visible Spectrophotometry
2014 ASTM E463-14a Standard Test Method for Determination of Silica in Fluorspar by Silico-Molybdate Visible Spectrophotometry
2014 ASTM E463-14 Standard Test Method for Determination of Silica in Fluorspar by Silico-Molybdate Visible Spectrometry
2009 ASTM E463-09 Standard Test Method for Determination of Silica in Fluorspar by Silico-Molybdate Visible Spectrometry
2008 ASTM E463-08 Standard Test Method for Silica in Fluorspar by the Silico-Molybdate Visible Spectrometry
2003 ASTM E463-03 Standard Test Method for Silica in Fluorspar by the Silico-Molybdate Visible Spectrometry
1998 ASTM E463-98 Standard Test Method for Silica in Fluorspar by the Silico-Molybdate Visible Spectrometry