BS 4993-6-1980 Methods of test for aluminium fluoride for industrial use - Determination of moisture content (gravimetric method)《工业用氟化铝试验方法 第6部分 含水量测定(称重法)》.pdf

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1、BRITISH STANDARD BS 4993-6: 1980 BS 5050-10: 1980 ISO 3393:1976 Methods of test for Aluminium fluoride for industrial use Part 6: Determination of moisture content (gravimetric method) Methods of test for Cryolite Part 10: Determination of moisture content (gravimetric method) ISO title: Cryolite, n

2、atural and artificial, and aluminium fluoride for industrial use Determination of moisture content Gravimetric method UDC 661.862.36:543.712BS4993-6:1980 were directly represented on the committee entrusted with the preparation of these British Standards: Aluminium Federation British Ceramic Researc

3、h Association Royal Institute of Chemistry Amendments issued since publication Amd. No. Date of issue CommentsBS4993-6:1980 m 2 is the mass, in grams, of the weighing bottle, with its lid, containing the test portion before drying. 7 Test report The test report shall include the following particular

4、s: a) the reference of the method used; b) the results and the method, of expression used; c) any unusual features noted during the determination; d) any operation not included in this International Standard or in the International Standards to which reference is made, or regarded as optional. m 2 m

5、 1 m 0 - 100BS4993-6:1980 & BS 5050-10:1980 2 BSI 11-1999 Annex ISO Publications relating to cryolite, natural and artificial, and aluminium fluoride for industrial use CRYOLITE, NATURAL AND ARTIFICIAL ISO 1619, Preparation and storage of test samples. ISO 1620, Determination of silica content Spect

6、rophotometric method using the reduced molybdosilicate. ISO 1693, Determination of fluorine content Modified Willard-Winter method. ISO 1694, Determination of iron content 1,10-Phenanthroline photometric method. ISO 2366, Determination of sodium content Flame emission and atomic absorption spectroph

7、otometric methods. ISO 2367, Determination of aluminium content 8-Hydroxy-quinoline gravimetric method. ISO 2830, Determination of aluminium content Atomic absorption method. ISO 3391, Determination of calcium content Flame atomic absorption method. ISO 3392, Determination of water content Electrome

8、tric method. ISO 3393, Determination of moisture content Gravimetric method. ISO 4277, Evaluation of free fluorides content Conventional titrimetric method. ISO 4280, Determination of sulphates content Barium sulphate gravimetric method. ALUMINIUM FLUORIDE FOR INDUSTRIAL USE ISO 2362, Determination

9、of fluorine content Modified Willard-Winter method. ISO 2368, Determination of iron content 1,10-Phenanthroline photometric method. ISO 2369, Determination of silica content Spectrophotometric method using the reduced silicomolybdic complex. ISO 2925, Preparation and storage of test sample. ISO 3392

10、, Determination of water content Electrometric method. ISO 3393, Determination of moisture content Gravimetric method. ISO 4279, Determination of sodium content Flame emission spectrophotometric method. ISO 4280, Determination of sulphates content Barium sulphate gravimetric method.BS4993-6:1980 & B

11、S 5050-10:1980 BSI 11-1999 Publications referred to See national foreword.BS 4993-6: 1980 BS 5050-10: 1980 ISO 3393:1976 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on

12、 standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the qual

13、ity of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this BritishStandard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI

14、offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel:02089969001. Fax:020899

15、67001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as BritishStandards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international sta

16、ndards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel:02089967111. Fax:02089967048. Subscribing members of BSI are kept up to date

17、 with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel:02089967002. Fax:02089967001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the U

18、K, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without pri

19、or written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel:02089967070.

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