BS-3338-7-1961.pdf
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1、BRITISH STANDARD BS 3338-7: 1961 Method for The determination of silver in solders (Volumetric: ammonium thiocyanate method) Methods for the sampling and analysis of tin and tin alloys Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 07:54:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3338-
2、7:1961 This British Standard, having been approved by the Non-ferrous Metals Industry Standards Committee and endorsed by the Chairman of the Engineering Divisional Council, was published under the authority of the General Council on 17 February 1961 BSI 12-1999 The following BSI references relate t
3、o the work on this standard: Committee references NFE/27, NFE/27/1 Draft for comment A(NFE) 9204 ISBN 0 580 03077 6 Co-operating organizations The Non-ferrous Metals Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the followi
4、ng Government departments and scientific and industrial organizations: Admiralty*Institution of Mining and Metallurgy Aluminium Development AssociationInstitution of Structural Engineers Aluminium Industry CouncilLead Development Association Association of Bronze and Brass FoundersLead Sheet and Pip
5、e Manufacturers Association of Consulting EngineersFederation (Incorporated)Light Metal Founders Association British Bronze and Brass Ingot ManufacturersLondon Metal Exchange* AssociationMagnesium Industry Council British Electrical and Allied ManufacturersMinistry of Aviation* Association*National
6、Brassfoundry Association British Non-ferrous Metals FederationNon-ferrous Metal Stockists British Non-ferrous Metals ResearchPost Office* Association*Royal Institute of British Architects Cable Makers Association*Society of British Aircraft Constructors Copper Development AssociationSociety of Motor
7、 Manufacturers and Crown Agents for Oversea Governments andTraders Ltd.* AdministrationsTin Research Institute* High Commission of IndiaWar Office* High Conductivity Copper AssociationZinc Development Association Institute of British FoundrymenIndividual manufacturers Institute of Metals Institution
8、 of Mechanical Engineers (Automobile Division) The Government departments and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: British Ra
9、ilways, The British TransportSolder Makers Association CommissionTinplate Conference (1925) British Tin Box Manufacturers FederationTin Producers Association Electronic Engineering AssociationWhite Metal Bearing Manufacturers Gas CouncilIndividual manufacturers Institution of Gas Engineers London Tr
10、ansport Executive, The British Transport Commission Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 07:54:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3338-7:1961 BSI 12-1999i Contents Page Co-operating organizationsInside front cov
11、er Forewordii Introduction1 Apparatus1 Solutions required1 Sampling1 Procedure1 Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 07:54:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3338-7:1961 ii BSI 12-1999 Foreword This standard makes reference to the following British Standard: BS 3338,
12、Methods for the sampling and analysis of tin and tin alloys Part 12: Sampling of solders. This method for the determination of silver in solders is the seventh of a series of methods which will form a complete British Standard under the collective title “Methods for the sampling and analysis of tin
13、and tin alloys”, each method being published as a separate part. The preparation of this series of methods has been authorized by the Non-ferrous Metals Industry Standards Committee as part of a general programme for the standardization of methods for the sampling and analysis of non-ferrous metals.
14、 Other methods in the series are as follows: Part 1: Sampling of ingot tin; Part 2: Determination of tin in ingot tin; Part 3: Determination of antimony in ingot tin; Part 4: Determination of copper in ingot tin and tin-lead solders; Part 5: Determination of lead in ingot tin and tin-antimony solder
15、s; Part 6: Determination of copper in high purity ingot tin; Part 8: Determination of bismuth in ingot tin, tin-lead solders and white metal bearing alloys; Part 9: Determination of arsenic in ingot tin, tin-lead solders and white metal bearing alloys; Part 10: Determination of iron in ingot tin, ti
16、n-lead solders and white metal bearing alloys; Part 11: Determination of tin in solders; Part 12: Sampling of solders. The complete British Standard methods will be found suitable for the grades of metals covered by BS 3252, “Ingot tin”, BS 219, “Soft solders”, and BS 3332, “White metal bearing allo
17、y ingots”. In the methods for determining impurities, sample weights and aliquots have been chosen to cover the range of impurity content usually found in commercial tin ingots, solders and white metal bearing alloy ingots. For amounts of impurity outside this range, sample weights of aliquots shoul
18、d be adjusted accordingly. The methods have been found to give reliable and reproducible results, and, while in some instances they may appear to be lengthy, it should be realized that they are put forward as “referee” methods to be used in cases of dispute. A British Standard does not purport to in
19、clude all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pag
20、es i and ii, pages 1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 07:54:45 GM
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