ISO 10136-2-1993 PDF

Full title and description

ISO 10136-2:1993 — Glass and glassware — Analysis of extract solutions — Part 2: Determination of sodium oxide and potassium oxide by flame spectrometric methods. Specifies flame spectrometric procedures for measuring sodium and potassium in extract solutions from glass and glassware, reporting results as Na2O and K2O equivalents.

Abstract

The method is based on spraying the extract solution into the flame of an emission or absorption spectrometer (or into a filter‑flame spectrometer). For flame emission spectrometry (FES) and flame atomic absorption spectrometry (FAAS) the analytical lines used are 589.0 nm (Na) and 766.5 nm (K); measurements are compared with reference solutions and, where appropriate, a spectrochemical buffer is used. Results are expressed as concentrations of sodium oxide (Na2O) and potassium oxide (K2O). The method applies to extract solutions obtained from any kind of glass or glassware.

General information

• Status: Published (International Standard; reviewed and confirmed in ISO catalogue entries).
• Publication date: 1 July 1993.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 71.040.20 (Laboratory ware and related apparatus); 81.040.01 (Glass in general).
• Edition / version: Edition 1 (1993).
• Number of pages: 6.

Scope

This part of ISO 10136 specifies flame spectrometric methods for the determination of sodium and potassium in extract solutions prepared from any kind of glass or glassware (including laboratory, pharmaceutical, food‑packaging, tableware and kitchenware). It sets out the analytical principle, required instrumentation options (FES, FAAS, flame filter spectrometer), wavelengths/lines to be used, calibration against reference solutions, and reporting of results as Na2O and K2O. The standard does not cover other elements or non‑extract analytical routes.

Key topics and requirements

• Analytical principle: introduction of extract solution into a flame and measurement of emission or absorption signals.
• Instrument options: flame emission spectrometer (FES), flame atomic absorption spectrometer (FAAS), and flame filter spectrometer.
• Analytical lines: sodium at 589.0 nm; potassium at 766.5 nm.
• Use of spectrochemical buffer solutions where required (to reduce interferences and stabilize signal).
• Calibration: comparison with measurements of prepared reference solutions of known Na and K concentrations.
• Reporting: concentrations converted and reported as oxides Na2O and K2O.
• Applicability: extract solutions from any glass or glassware types; method scope excludes non‑extract analytical procedures and elements outside Na/K.

Typical use and users

Used by materials and quality control laboratories in the glass industry, manufacturers of laboratory and food‑contact glassware, independent testing labs, research institutions studying glass leachability and composition, and regulatory bodies concerned with glass‑to‑product interactions. Typical applications include product conformity testing, routine quality checks, and research on leaching behaviour.

Related standards

ISO 10136 is a multipart series covering analysis of extract solutions from glass and glassware. Closely related parts include: ISO 10136-1:1993 (Determination of silicon dioxide by molecular absorption spectrometry), ISO 10136-3:1993 (Determination of calcium oxide and magnesium oxide by flame atomic absorption spectrometry), ISO 10136-4:1993 (Determination of aluminium oxide by molecular absorption spectrometry), ISO 10136-5:1993 (Determination of iron(III) oxide by molecular absorption spectrometry and FAAS).

Keywords

glass analysis; extract solutions; sodium oxide; potassium oxide; Na2O; K2O; flame spectrometry; FES; FAAS; flame filter spectrometer; ISO 10136.

FAQ

Q: What is this standard?

A: ISO 10136-2:1993 is an international standard that specifies flame spectrometric methods for determining sodium oxide and potassium oxide in extract solutions from glass and glassware.

Q: What does it cover?

A: It covers the analytical principle, instrumentation options (FES, FAAS, flame filter spectrometer), the specific analytical lines to be used (Na 589.0 nm, K 766.5 nm), calibration with reference solutions, use of buffers where necessary, and reporting of results as Na2O and K2O equivalents.

Q: Who typically uses it?

A: Glass manufacturers, laboratory and quality‑control analysts, independent test houses, researchers studying glass leaching and composition, and regulatory testing laboratories.

Q: Is it current or superseded?

A: This edition (1 July 1993) is published and, according to the ISO catalogue entry for this part, was reviewed/confirmed in the ISO systematic review cycle (latest confirmation recorded in ISO catalogue entries). It remains the published edition; users should check the ISO catalogue or their national standards body for any very recent revisions or withdrawals before use.

Q: Is it part of a series?

A: Yes — ISO 10136 is a multipart series (at least Parts 1–5) that collectively specify analytical methods for different oxides and elements in extract solutions from glass and glassware.

Q: What are the key keywords?

A: Glass analysis; extract solutions; Na2O; K2O; flame spectrometry; FES; FAAS; calibration; spectrochemical buffer.