ISO 10136-6-1993 PDF

Full title and description

ISO 10136-6:1993 — Glass and glassware — Analysis of extract solutions — Part 6: Determination of boron(III) oxide by molecular absorption spectrometry. Specifies a colorimetric/molecular absorption method for determining boron, reported as B2O3, in extract solutions from glass and glassware.

Abstract

The method complexes boron in the extract solution with azomethine H and measures the optical density of the resulting coloured complex at 415 nm using 20 mm optical cells; results are reported as boron expressed as its oxide B2O3. The procedure applies to extract solutions obtained from any kind of glass or glassware, including laboratory, pharmaceutical, table and kitchenware.

General information

• Status: Published (under systematic review stage as recorded by ISO)
• Publication date: July 1993 (Edition 1 — published 1993)
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 71.040.20 (Laboratory ware and related apparatus); 81.040.01 (Chemical analysis — general methods)
• Edition / version: Edition 1 (1993)
• Number of pages: 5 pages (standard text)

Scope

This part of ISO 10136 specifies a laboratory analytical procedure for the determination of boron(III) oxide in extract solutions obtained from glass and glassware. It is intended for use with extracts prepared from any type of glassware (for example borosilicate glass, neutral glass, tableware and kitchenware) where quantification of boron leached into an extracting medium is required.

Key topics and requirements

• Analytical principle: complexation of boron with azomethine H and molecular absorption (colorimetric) measurement.
• Measurement wavelength: 415 nm using 20 mm optical cells.
• Result reporting: concentration of boron expressed as B2O3 (boron(III) oxide).
• Applicability: extract solutions from a wide range of glass and glassware types (laboratory, pharmaceutical, tableware, kitchenware).
• Laboratory requirements: standard molecular absorption spectrometer and appropriate calibration/reference solutions for B2O3 quantification.

Typical use and users

Used by analytical and quality-control laboratories, glass and glassware manufacturers, regulatory testing bodies and research groups to quantify boron released from glass into extract solutions as part of product safety, conformance testing and material characterization.

Related standards

This document is Part 6 of the ISO 10136 series (Glass and glassware — Analysis of extract solutions). Other parts in the series cover determination of silicon dioxide, alkali oxides, alkaline-earth oxides, iron oxides and related analytes (for example ISO 10136-1, -2, -3, -5). National or sector-specific standards for glass leach testing and related analytical methods may also be relevant when applying or interpreting results.

Keywords

glass, glassware, extract solutions, boron, boron(III) oxide, B2O3, azomethine H, molecular absorption spectrometry, colorimetric method, 415 nm, ISO 10136

FAQ

Q: What is this standard?

A: ISO 10136-6:1993 is an ISO international standard that specifies a method to determine boron (reported as B2O3) in extract solutions from glass and glassware using azomethine H complexation and molecular absorption measurement at 415 nm.

Q: What does it cover?

A: It covers the analytical procedure (reagents, measurement conditions, calibration and reporting) for the determination of boron(III) oxide in extract solutions obtained from any kind of glass or glassware, including laboratory, pharmaceutical and domestic ware.

Q: Who typically uses it?

A: Analytical and QC laboratories, glassware manufacturers, regulatory testing organizations and material researchers use this method to assess and report boron content leached into extract solutions.

Q: Is it current or superseded?

A: The standard was published in 1993 (Edition 1). According to the ISO lifecycle entry it is published and listed under systematic review (stage 90.20) — users should check the ISO catalog or their national standards body to confirm whether a newer replacement or amendment exists before relying on it for regulatory compliance or procurement.

Q: Is it part of a series?

A: Yes. ISO 10136-6:1993 is one part of the ISO 10136 series dealing with the analysis of extract solutions from glass and glassware; other parts (for example ISO 10136-1, -2, -3, -5) specify methods for different analytes.

Q: What are the key keywords?

A: glass, extract solutions, boron, B2O3, azomethine H, molecular absorption spectrometry, colorimetric method, ISO 10136.