BS-733-PART-1-1983 ISO-3507-1976.pdf
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1、BRITISH STANDARD BS 733-1:1983 ISO 3507:1976 Pyknometers Part 1: Specification ISO title: Pyknometers UDC 531.754.4:542.3 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 10:53:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 733-1:1983 This British Standard, hav
2、ing been prepared under the direction of the Laboratory Apparatus Standards Committee, was published under the authority of the Board of BSI and comes into effect on 30 December 1983 BSI 09-1999 First published as BS 733:1937 First revision July 1952 Second revision April 1965 Third revision as BS 7
3、33-1 December 1983 The following BSI references relate to the work on this standard: Committee reference LBC/27 Draft for comment 75/50380 DC ISBN 0 580 13630 2 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Laboratory Apparatus Standar
4、ds Committee (LBC/-) to Technical Committee LBC/27 upon which the following bodies were represented: Association of Clinical Biochemists British Laboratory Ware Association British Lampblown Scientific Glassware Manufacturers Association Ltd. Department of Health and Social Security Department of Tr
5、ade and Industry Laboratory of the Government Chemist Glass Manufacturers Federation Institute of Medical Laboratory Sciences Medical Sterile Products Association Ministry of Defence Society of Chemical Industry Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: London
6、South Bank University, London South Bank University, Fri Dec 08 10:53:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 733-1:1983 BSI 09-1999i Contents Page Committees responsibleInside front cover National forewordii 1Scope and field of application1 2Basis of adjustment1 3Types and series of sizes1
7、 4Definition of capacity1 5Difference between actual capacity and nominal capacity1 6Construction1 7Graduation lines3 8Inscriptions3 9Visibility of graduation lines, figures and inscriptions4 Annex Device for adjusting the liquid level in a Reischauer-type pyknometer8 Figure 1 Type 1 (Lipkin)5 Figur
8、e 2 Type 2 (Sprengel)5 Figure 3 Type 3 (Gay-Lussac)6 Figure 4 Type 4 (Reischauer)6 Figure 5 Type 5 (Hubbard)6 Figure 6 Draw-off needle8 Figure 7 Filling needle8 Table 1 Types and sizes of pyknometers1 Table 2 Dimensional requirements for pyknometer tubes4 Table 3 Dimensional requirements for pyknome
9、ter flasks7 Publications referred toInside back cover Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 10:53:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 733-1:1983 ii BSI 09-1999 National foreword This Part of this British Standard has been prepared under th
10、e direction of the Laboratory Apparatus Standards Committee and is identical with ISO 3507 “Pyknometers”, published in 1976 by the International Organization for Standardization (ISO). BS 733 was first published in 1937 under the title “Density bottles” and was subsequently revised in 1952 and again
11、 in 1965. BS 733:1965 is withdrawn. The principal changes in this Part of this revision include a change of title to “Pyknometers” in order to accommodate the Lipkin and Sprengel instruments which cannot be described as density bottles, the omission of the 100 mL size of Gay-Lussac bottle and the om
12、ission of the appendices describing determination of capacity, calculation of density and measurement of liquid in bulk. It is intended to publish the revised appendices in due course as BS 733-2. The unit of capacity remains the cubic centimetre, for which the name “millilitre” is used throughout.
13、ISO is considering a proposal from the UK for the re-instatement of the 100 mL Gay-Lussac bottle and, should the proposal be accepted, it is intended that this Part of this revision will be amended accordingly. Terminology and conventions. The text of the International Standard has been approved as
14、suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. The comma has been used as a decimal marker. In British Standards it is current practice
15、to use a full point on the baseline as the decimal marker. The lower case “l” has been used as an abbreviation for the litre. In British Standards it is current practice to use a capital “L” as the abbreviation for the litre. Wherever the words “International Standard” appear, referring to this stan
16、dard, they should be read as “British Standard”. Cross references. The Technical Committee has reviewed the provisions of ISO 383, to which reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. A related British Standard is BS 572 “Interch
17、angeable conical ground glass joints”. NOTEThe reference, in the footnote to 6.1, to ISO 4789 (in course of preparation) for which there is no corresponding British Standard constitutes informative matter only and, since no mandatory requirements are involved, the validity of this British Standard i
18、s not affected. A British Standard does not purport to include 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 doc
19、ument comprises a front cover, an inside front cover, pages i and ii, pages 1 to 8, 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 C
20、opy: London South Bank University, London South Bank University, Fri Dec 08 10:53:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 733-1:1983 BSI 09-19991 1 Scope and field of application This International Standard specifies requirements for an internationally acceptable series of pyknometers for g
21、eneral laboratory use for the determination of the densities of liquids. Specialized pyknometers for use with particular products, or otherwise not in common use, are excluded. Sufficient details to define such pyknometers should be included in International Standards specifying or describing their
22、use. A device suitable for adjusting the liquid level in the neck of the Reischauer pyknometer is shown in the Annex. 2 Basis of adjustment 2.1 Unit of volume The unit of volume shall be the cubic centimetre (cm3), for which the name millilitre (ml) may be used. 2.2 Reference temperature If the prec
23、ise capacity is marked on a pyknometer, the verification temperature at which this precise capacity is determined shall also be marked. The temperature should preferably be 20 C. NOTEWhen it is necessary in tropical countries to work at an ambient temperature considerably above 20 C, and these count
24、ries do not wish to use the standard reference temperature of 20 C, it is recommended that they adopt a temperature of 27 C. 3 Types and series of sizes Two types of pyknometer tube and three types of pyknometer flask are specified, as listed in Table 1 and illustrated in Figure 1 to Figure 5. Types
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