BS 4974-1975 Specification for water for lead-acid batteries《铅酸电池用水规范》.pdf
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1、Specification for Water for lead-acid batteries Gr 6 British Standards Institution “his British Standard, having been approved by the Chemicals Industry Standards Committee, was published under the authority of the Executive Board on British Standards Institution, 1975. 29 August 1975. ISBN: O 580 0
2、7826 4 Copyright Users of British Standards are reminded that copyright subsists in all BSI publications. No part of this publication may be reproduced in any form without the prior permission in writing of BSI. This does not preclude the free use, in the course of implementing the standard, of nece
3、ssary details such as symbols and size, type or grade designations. Enquiries should be addressed to the BSI Secretariat. Contract requirements Attention is drawn to the fact that this British Standard does not purport to include all the necessary provisions of a contract. Revision of British Standa
4、rds In order to keep abreast of progress in the industries concerned, British Standards are subject to periodical review. Suggestions for improvements will be recorded and in due course brought to the notice of the committees charged with the revision of the standards to which they refer. British St
5、andards are revised, when necessary, by the issue either of amendment slips or of revised editions. It is important that users of British Standaeds should ascertain that they are in possession of the latest amendments or editions. Fuil information on all BSI publications, numbering over 6000, will b
6、e found in the British Standards Yearbook. This information is supplemented by details published each month in BSINews of new publications, revisions and amendments. BSI News is available to Subscribing Members of the Institution. Au other publications may be purchased direct from Sales Department.
7、Enquiries concerning subscribing membership, which has considerable advantages, will be welcomed, and should be made to Subscriptions Department. Both departments are located at: 101 Pentonviile Road, London N1 9MD (Telephone 01-837 8801; Telex 23218). The following BSI references relate to the work
8、 on this standard: Committee reference CIC/8 Draft for comment 71/53575 Co-operating organizations The Chemical Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and industrial organizations
9、: Association of Fatty Acld Distillers British Steel Industry Chemical Industries Association Department of Health and Social Security Department of Industry “Department of Industry-Laboratory of the Government Chemist Fertilizer Manufacturers Association Ministry of Agriculture, Fisheries and Food
10、“National Sulphuric Acid Association Royal Institute of Public Health and Hygiene Soap and Detergent Industry Association Society for Analytical Chemistry The Government department and industrial organization marked with an asterisk in the above list, together with the following, were directly repre
11、sented on the committee entrusted with the preparation of this British Standard: British Battery Makers Society Ministry of Defence 7508 -2k-B Post Office Society of Motor Manufacturers and Traders Ltd. BS 4974 : 1975 UDC 621.355.2.035.221.62 : 663.63 Amd. No. Specification for Date of issue Text af
12、fected Water for lead-acid batteries British Standards Institution - 2 Park Street - London WIA 2BS Telephone O1 -629 9000 Telex 266933 BS 4974 : 1975 Contents Page Co-operating organizations Inside front cover Foreword 2 Specif isation 1. Scope 2. Grade A water 3. Grade B water 3 3 3 Appendices A.
13、Method for the determination of manganese content 5 e Page B. Method for the determination of sulphated residue on ignition C. Method for the determination of chloride con tent D. Method for the determination of ammoniacal nitrogen content E. Method for the determination of nitrogen oxides content F
14、. Method for the determination of iron content G. Method for the determination of copper content H. Method for the determination of conductivity 6 6 7 9 10 11 8 13 Foreword This British Standard has been prepared under the authority of the Chemicals Industry Standards Committee following receipt of
15、a request from the Ministry of Defence to provide a specification for a grade of water suitable for lead-acid batteries. Two grades of water are specified. The specification for Grade A gives requirements for distilled or de-ionized water which should preferably be used whenever it is available and
16、should always be used for counter-EMF cells. The specification for Grade B represents the minimum grade of water that can be used for certain other types of battery only, by agreement with the manufacturer. A separate British Standard is in preparation that will give specifications for water for use
17、 in alkaline cells. lead-acid batteries (limits for impurities). should be taken to ensure that the container does not contaminate the water; the use of glass or plastics containers is recommended. Certification. Attention is drawn to the certification facilities described on the inside back cover o
18、f this standard. The methods of test specified are as far as possible the same as those in BS 303 1, Sulphuric acid for use in Particular attention should be paid to the storage of water for the maintenance of electric batteries. Care 2 British Standard Specification for Water for lead-acid batterie
19、s 1. Scope This British Standard specifies requirements for two grades of water for lead-acid batteries. Grade A water is an all-purpose quality which should preferably be used. Grade B is the minimum quality of water which can be used for certain types of battery only, by agreement with the manufac
20、turer. NOTE. The titles of the British Standards referred to in this standard are listed on the inside back cover. 2. Grade A water 2.1 Description. The material shall be water purified by distillation or ion exchange. It shall be clear and colourless when viewed through a depth of 300 mm. 2.2 Condu
21、ctivity. The material shall not have a conductivity greater than 1 mS/mx, measured at 20 OC, when tested by the method described in Appendix H. 2.3 Manganese content. The material shall not contain more than 0.1 mg of manganese, Mn, per kilogram, determined and calculated by the method described in
22、Appendix A. 2.4 Sample. For the purpose of examination in accordance with this specification, a representative sample of the material not less than 2000 ml in volume shall be taken from the bulk. The sample shall be placed in a clean, dry and airtight glass-stoppered.hottle of borosilicate glass of
23、such a size that it is nearly filled by the sample. If it is necessary to seal the bottle, care shall be taken to avoid contaminating the contenfs in any way. 2.5 Packaging and marking. The material shall be supplied in sound, clean containers of glass, polyethylene or other suitable plastics materi
24、al, or as otherwise agreed between the purchaser and the vendor. Identification and marking shall mention this British Standard, i.e. BS 4974, and Grade A, and shall also be in accordance with the contract. 3. Grade B water 3.1 Description. The material shd be water, free from matter in suspension a
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