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
- Standard No.
- ISO 21078-1:2008
- Release Date
- 2008
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 21078-1:2008
- Scope
- This part of ISO 21078 specifies methods of determining boron(lli) oxide in refractory products and raw materials, in mass fractions of 0,01 % or greater. It is applicable to the determination of total boron(lll) oxide in oxidic materials for ceramics, glass and glazes. The determination of boron(lll) oxide is carried out using one of the following four methods: a) alkaline titrimetry, which is applied to samples containing more than 0,5 % by mass of boron(lll) oxide; b) azomethine H absorption spectrophotometry, which is applied to samples containing from 0,01 % by mass to 2,5 % by mass of boron(lll) oxide; c) curcumin absorption spectrophotometry (rothocyanine method), which is applied to samples containing from 0,01 % by mass to 1,0 % by mass of boron(lll) oxide; d) 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(lll) oxide. NOTE 1 The method can be extended to 30 % boron(lll) oxide using modified oxidic fluxes NOTE 2 Interlaboratory test results for this part of ISO 21078 are given in Annex A.
ISO 21078-1:2008 Referenced Document
- ISO 31-0 Quantities and units - Part 0: General principles; Amendment 2
- ISO 3310-1 Test sieves - Technical requirements and testing - Part 1: Test sieves of metal wire cloth*， 2016-08-01 Update
- ISO 3696 Water for analytical laboratory use; Specification and test methods
- ISO 6353-2 Reagents for chemical analysis — Part 2: Specifications — First series — Addendum 2
- ISO 6353-3 Reagents for chemical analysis; Part 3 : Specifications; Second series
- ISO 836 Terminology for refractories
ISO 21078-1:2008 history
- 2008 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
