• There are no items in your cart

BS 4140-19:1986

Current

Current

The latest, up-to-date edition.

Methods of test for aluminium oxide Determination of boron content

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

28-02-1986

€140.23
Excluding VAT

NO CONTENTS SECTION

Gives a curcumin spectrophotometric method for determining boron content of aluminium oxide used for the production of aluminium. Applicable to boron contents, expressed as boron oxide greater than 0,0006%.

Committee
W/-
DevelopmentNote
Also numbered as ISO 2865 Supersedes 85/52368 DC and BS 4140:ADD3(1974) (07/2005) Reviewed and confirmed by BSI, November 2016. (11/2016)
DocumentType
Standard
Pages
12
PublisherName
British Standards Institution
Status
Current
Supersedes

This International Standard specifies a curcumin spectrophotometric method for the determination of the boron content of aluminium oxide primarily used for the production of aluminium.

The method is applicable to boron contents, expressed as boron oxide (B2O3), greater than 0,000 6 % [i.e. 0,000 2 % expressed as boron (B)].

NOTE The sensitivity of the method, as may be gathered from the calibration curve, is in fact higher. In the case of a very low blank reading, and with sufficiently sensitive apparatus, the lower limit of application of the method may be extended to 0,000 08 % of boron oxide (B2O3), corresponding to 0,000 025 % of boron (B).

Standards Relationship
ISO 2865:1973 Identical

BS 4140-20:1980 Methods of test for aluminium oxide Sampling
BS 4140-1:1986 Methods of test for aluminium oxide Preparation and storage of test samples

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.