Norm

NEN-EN-ISO 21078-1:2006 Ontw. en

Bepaling van het gehalte aan borium (III) oxide in vuurvaste producten - Deel 1: Bepaling van het totale gehalte aan borium oxide in oxideerbare materialen voor keramiek, glas en glazuur

  • Deze norm is ingetrokken sinds 28-01-2008

25,62

Over deze norm

Status Ingetrokken
Aantal pagina's 20
Commissie Vuurvaste materialen
Gepubliceerd op 01-08-2006
Taal Engels
This standard describes methods of determining boron (III) oxide in refractory products and raw materials, in concentrations of 0,01 % or greater. The determination of boron (III) oxide is carried out using one of the following for methods: a) alkaline titrimetry, which is applied to samples containing more than 0,5 % by mass of boron (III) oxide; b) azomethine H absorption spectrophotometry, which is applied to samples containing from 0,01 % by mass to 2,5 % by mass of boron (III) 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 (III) oxide; d) inductively coupled plasma atomic emission spectrometry (ICP-AES), which is applied to the sample containing from 0,01 % by mass to 15 % by mass of boron (III) oxide.

Details

ICS-code 81.040.01
81.060.01
Nederlandse titel Bepaling van het gehalte aan borium (III) oxide in vuurvaste producten - Deel 1: Bepaling van het totale gehalte aan borium oxide in oxideerbare materialen voor keramiek, glas en glazuur
Engelse titel Determination of boron(III) oxide in refractory products - Part 1: Determination of total boric oxide in oxidic materials for ceramics, glass and glazes
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