BS EN ISO 21078-1:2008
Current
The latest, up-to-date edition.
Determination of boron (III) oxide in refractory products Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes
Hardcopy , PDF
English
30-09-2008
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Preparation of the test sample
5 Number of determinations
6 Determination of boron(III) oxide by alkaline titrimetry
7 Determination of boron(III) oxide by azomethine H
absorption spectrophotometry
8 Determination of boron(III) oxide by curcumin absorption
spectrophotometry
9 Determination of boron(III) oxide by inductively coupled
plasma atomic emission spectrometry (ICP-AES)
10 Expression of test results
11 Test report
Annex A (informative) - Interlaboratory test results
Describes methods of determining boron(3) oxide in refractory products and raw materials, in mass fractions of 0,01% or greater.
| Committee |
RPI/1
|
| DevelopmentNote |
Supersedes BS 1902-2.3:ADD1(1976) and 06/30127629 DC. (10/2008) Reviewed and confirmed by BSI, November 2016. (11/2016)
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO21078 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(III) oxide in oxidic materials for ceramics, glass and glazes. The determination of boron(III) oxide is carried out using one of the following four methods: alkaline titrimetry, which is applied to samples containing more than 0,5%by mass of boron(III) oxide; azomethine H absorption spectrophotometry, which is applied to samples containing from 0,01%by mass to 2,5%by mass of boron(III) oxide; curcumin absorption spectrophotometry (rothocyanine method), which is applied to samples containing from 0,01%by mass to 1,0%by mass of boron(III) oxide; inductively coupled plasma atomic emission spectrometry (ICP-AES), which is applied to samples containing from 0,01%by mass to 15%by mass of boron(III) oxide. NOTE1 The method can be extended to 30%boron(III) oxide using modified oxidic fluxes. NOTE2 Interlaboratory test results for this part of ISO21078 are given in AnnexA.
| Standards | Relationship |
| EN ISO 21078-1:2008 | Identical |
| ISO 21078-1:2008 | Identical |
| ISO 3310-1:2016 | Test sieves Technical requirements and testing Part 1: Test sieves of metal wire cloth |
| ISO 836:2001 | Terminology for refractories |
| ISO 31-0:1992 | Quantities and units Part 0: General principles |
| ISO 6353-3:1987 | Reagents for chemical analysis — Part 3: Specifications — Second series |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
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