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1、BRITISH STANDARD BS 5928:1980 ISO 4796:1977 Specification for Bottles for laboratory use ISO title: Laboratory glassware Bottles UDC 542.231.2:666.172.7:661.171 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 13:49:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5928:1980 This British Standa
2、rd, having been prepared under the direction of the Laboratory Apparatus Standards Committee, was published under the authority of the Executive Board and comes into effect on 31 March 1980 BSI 02-2000 The following BSI references relate to the work on this standard: Committee reference LBC/23 Draft
3、 for comment 76/52075 DC ISBN 0 580 11287 X Cooperating organizations The Laboratory Apparatus Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Agricultura
4、l Research Council Association for Science Education* British Educational Equipment Association British Laboratory Ware Association* British Lampblown Scientific Glassware Manufacturers Association Ltd. British Pharmacopoeia Commission Chemical Industries Association Chemical Society Chemical Societ
5、y, Analytical Division Department of Health and Social Security Department of Industry (Laboratory of the Government Chemist)* Glass Manufacturers Federation* Institute of Petroleum Ministry of Defence Pharmaceutical Society of Great Britain Scientific Instrument Manufacturers Association Society of
6、 Chemical Industry Society of Glass Technology Standardization of Tar Products Tests Committee The 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: Association of
7、Scientific, Technical and Managerial Staffs Consortium of Local Education Authorities for the Provision of Science Equipment (CLEAPSE) Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 13:49:06 GMT+00:00 2006, Uncontrolled Copy,
8、(c) BSI BS 5928:1980 BSI 02-2000i Contents Page Cooperating organizationsInside front cover National forewordii 0Introduction1 1Scope and field of application1 2Reference1 3Series of capacities1 4Dimensions1 5Construction1 6Marking2 Publications referred toInside back cover Licensed Copy: sheffieldu
9、n sheffieldun, na, Mon Dec 04 13:49:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5928:1980 ii BSI 02-2000 National foreword This British Standard has been prepared under the direction of the Laboratory Apparatus Standards Committee. It is identical with ISO 4796 “Laboratory glassware Bottles” pu
10、blished in 1977 by the International Organization for Standardization (ISO). Terminology and conventions. The text of the International Standard has been approved as suitable for publication, without deviation, as a British Standard. Some terminology and certain conventions are not identical with th
11、ose used in British Standards; attention is especially drawn to the following. The comma has been used throughout as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “International Standard” appear, referring
12、to this standard, they should be read as “British Standard”. Cross-reference. There is no British Standard equivalent for ISO 383,1) referred to in the text. A related British Standard for ISO 383 is BS 572 “Interchangeable conical ground glass joints”. NOTEThe k6 series, mentioned in 5.3.1, is iden
13、tical with the “B” series as specified in Amendment No. 1 published on 13 March 1962 to BS 572:1960. The k6 series, however, includes joints having nominal diameters of 71 mm, 85 mm and 100 mm, not given in BS 572. Additional information. For the purposes of this British Standard, the dimensions and
14、 design of the thread of the screw neck, as given in 5.2.8 should comply with the requirements of BS 1918 “Glass container finishes” Part 1 “Specification for continuous thread finish”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standa
15、rds 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, pages i and ii, pages 1 and 2, an inside back cover and a back cover. This s
16、tandard 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. 1) International Standards are obtainable from BSI Sales Department, Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 13:49:06 GMT+00
17、:00 2006, Uncontrolled Copy, (c) BSI BS 5928:1980 BSI 02-20001 0 Introduction Bottles used in a laboratory are often used to contain dangerous chemicals such as strong acids and it is therefore important that they are designed for maximum safety in use. Two features primarily affect safety in handli
18、ng: the neck and upper portion of the bottle shall be so designed that no air is trapped in the shoulder when the bottle, filled to its nominal capacity, is tipped for pouring; this avoids the danger of gulping and splashing of the contents. This feature can most conveniently be achieved by making t
19、he upper portion of the bottle of conical shape; the outside rim or lip at the top of the neck shall be so designed that, at the end of the pouring operation, the last drop is transferred to the receiving vessel and does not run down the outside of the bottle. The precise shape of the lip will depen
20、d to some extent on the method of manufacture and can only be specified in general terms. 1 Scope and field of application This International Standard specifies an internationally acceptable series of bottles suitable for the storage of liquid chemicals and reagents in general laboratory use. 2 Refe
21、rence ISO 383, Laboratory glassware Interchangeable conical ground joints. 3 Series of capacities 3.1 The nominal capacities of laboratory bottles shall be chosen from the following series: 3.2 The nominal capacity of a laboratory bottle indicates the quantity of liquid which a bottle of average wal
22、l thickness will contain when the bottle is filled to the turn of the shoulder. 3.3 The design of the bottle is such that the total capacity to the base of the neck is approximately 15 % greater than that to the shoulder. 4 Dimensions The dimensions and tolerances of laboratory bottles are given in
23、the figure and table below. 5 Construction 5.1 Material Laboratory bottles shall be constructed of clear colourless or amber glass of suitable chemical and thermal properties. Internal stress and visible defects in the glass (such as bubbles near the surface) shall be reduced to a level sufficient t
24、o minimize the possibility of fracture due to thermal or mechanical shock. 50 100 250 and 500 ml;1 2 5 and 10 litres. Nominal capacity Outside diameter D1 Wall thickness S min. Internal neck diameter D2 min. mlmmmmmm 50 100 250 500 1 000 2 000 5 000 10 000 43 54 71 90 110 135 185 230 1 1,2 1,3 1,3 1
25、,7 2 2,3 2,7 8,5 10,5 13 17 22 22,5 35 55 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 13:49:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5928:1980 2 BSI 02-2000 5.2 Design 5.2.1 The base of the bottle shall be so constructed that it stands firmly on a flat surface without rocking or s
26、pinning. 5.2.2 The base of the bottle shall have a suitable radius in order to provide a smooth transition between the base and the side. The main portion of the side may, if desired, be slightly tapered and shall be, at the mid-point, of diameter D1, as given in the table. 5.2.3 The shoulder of the
27、 bottle shall have a suitable radius in order to provide a smooth transition between the side and the conical upper portion of the bottle. 5.2.4 The upper portion of the bottle shall be of conical shape with an included angle of 90 . The transition radius to the neck shall be as small as possible co
28、mpatible with good manufacturing practice. 5.2.5 The bottle shall be blown so as to achieve a good distribution of glass in the mould without sudden changes in the wall thickness. The thinnest areas shall not have a thickness less than the minimum value specified in the table. 5.2.6 The neck of the
29、bottle shall be stoutly constructed and, in the case of ground conical necks, finished with a strengthening lip formed to facilitate pouring without liquid running down the outside of the bottle. A clip-on anti-drip ring of plastics material fitting into a slightly recessed channel on the outside of
30、 the neck is a permitted alternative form of construction. 5.2.7 The inside of a conical neck may be smooth or may be finished by fine grinding, preferably to an interchangeable joint size complying with the requirements of ISO 383. 5.2.8 Dimensions and design of the thread of a screw neck should co
31、mply with suitable national standards or International Standards. 5.3 Stoppers and closures Bottles shall preferably be provided with stoppers, which shall be of glass or a suitable inert plastics material. 5.3.1 Glass stoppers shall be made of glass of similar coefficient of expansion to that of th
32、e bottle. They should be ground, preferably, to a suitable joint size complying with the requirements of ISO 383, and should be selected, preferably, from the k6 series. 5.3.2 Plastics stoppers and closures shall be made from a suitable inert material and shall be moulded: for use with bottles with
33、conical neck to interchangeable joint sizes; for use with bottles with screw neck to a size of thread fitting that of the bottle. 5.3.3 Stoppers should preferably have a flat top with a grip larger than the diameter of the lip of the neck with which they are intended to be used. 6 Marking Laboratory
34、 bottles complying with this International Standard shall be marked with: a) the nominal capacity; b) the makers and/or vendors name or trade mark; c) in the case of bottles supplied with interchangeable stoppers, the size number of the joint, which shall be duplicated on the stopper; d) in the case
35、 of bottles with individually fitted ground glass stoppers, an identification number, which shall be duplicated on the stopper; e) the number of this International Standard, i.e. ISO 4796, or appropriate reference to the corresponding national standard. In addition, each bottle may bear an area with
36、 a surface suitable for marking with pencil. Marks a) to c) may be moulded into the recessed base of the bottle, if the method of manufacture permits; otherwise they may be indelibly marked, in any convenient position, by etching, sandblasting or with vitreous enamel. +0 5 Licensed Copy: sheffieldun
37、 sheffieldun, na, Mon Dec 04 13:49:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5928:1980 BSI 02-2000 Publications referred to See national foreword. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 13:49:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5928:1980 ISO 4796:1977 BSI 389 Chis
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