ISO 21078-1:2008 PDF

Name: ISO 21078-1:2008 — Determination of boron (III) oxide in refractory products — Part 1: Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes
SKU: ISO 21078-1:2008
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Determination of boron (III) oxide in refractory products — Part 1: Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes

Название (английский):

ISO 21078-1:2008

Determination of boron (III) oxide in refractory products — Part 1: Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 16
Дата публикации:: 7 января 2008 г.
Издание:: ISO IS 21078 edition 1 version 1
ICS:: 81.040.01

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Описание (английский):

ISO 21078-1:2008 specifies methods of determining boron(III) oxide in refractory products and raw materials, in mass fractions of 0,01 % or greater. It is applicable to the determination of total boron(111) oxide in oxidic materials for ceramics, glass and glazes.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 21078-1:2008 - Determination of boron(III) oxide in refractory products (Part 1) specifies standardized laboratory methods for measuring total boron(III) oxide (B2O3) in oxidic materials used for ceramics, glass and glazes. The standard applies to mass fractions of 0.01 % or greater and defines sample preparation, analytical procedures, result expression and reporting to ensure reproducible, comparable data across laboratories.

Key topics and technical requirements

Scope and limits

Applicable to oxidic raw materials and refractory products; lower reporting limit 0.01 % B2O3.

Sample preparation

Procedures for sampling, crushing and grinding (sieving to 300 µm then to 106 µm for test sample), drying (110 °C ± 5 °C) and reducing laboratory test portions.

Number of determinations

Simultaneous duplicate determinations and required blank tests for reagent corrections.

Approved analytical methods

Alkaline titrimetry - for samples typically containing > 0.5 % B2O3.
Azomethine H absorption spectrophotometry - for 0.01 % to 2.5 % B2O3.
Curcumin (rothanocyanine) absorption spectrophotometry - for 0.01 % to 1.0 % B2O3.
ICP-AES (inductively coupled plasma atomic emission spectrometry) - for 0.01 % to 15 % B2O3 (extendable to ~30 % with modified fluxes).

Quality and reagents

Use reagents of defined analytical purity and laboratory water conforming to ISO 3696 grade 2; standard solutions and titration procedures are specified.

Interferences and limitations

Noted interferences (e.g., germanium oxide affects alkaline titrimetry) and guidance to use alternative methods when necessary.

Result calculation and reporting

Formulas and instructions for expressing mass fraction as percentage and preparing the test report.

Applications and practical value

Ensures consistent, validated measurement of B2O3 in raw materials and finished refractory/ceramic/glaze products.

Supports quality control, incoming material inspection, formulation control for ceramics and glass, and comparative testing between suppliers.

Useful in materials testing laboratories, production QC labs, R&D groups working on glazes, glass compositions and refractory formulations, and conformity assessment bodies.

Related standards

ISO 21078-2 (acid extraction method for binder components)

ISO 3696 (Water for analytical laboratory use)

ISO 3310-1 (Test sieves)

ISO 6353-2 / ISO 6353-3 (Reagents for chemical analysis)

ISO 836 (Refractories - Vocabulary)

Keywords: ISO 21078-1:2008, boron(III) oxide, B2O3 determination, refractory products, ceramics, glass, azomethine H, curcumin spectrophotometry, alkaline titrimetry, ICP-AES, sample preparation.

ISO 21078-1:2008 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and practical value

Who would use this standard

Related standards

Технические детали

SIST EN ISO 3696:1998

Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)

SIST EN ISO 21078-2:2008

Determination of boron(III) oxide in refractory products - Part 2: Acid extraction method for the determinati…

BS ISO 3310-1:2016

Test sieves. Technical requirements and testing. Test sieves of metal wire cloth.

ISO 6353-2:1983/Add 2:1986

Reagents for chemical analysis — Part 2: Specifications — First series — Addendum 2

SIST ISO 6353-3:1995

Reagents for chemical analysis -- Part 3: Specifications -- Second series

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Packaging — Dimensional tolerances for general purpose sacks — Part 1: Paper sacks