AS 2164—2003 2164—2003
A S 2 1 6 4
Australian Standard™ . m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
Laboratory glassware—One-mark glassware—One-mark volumetric flasks
This Australian Standard was prepared by Committee CH-001, Laboratory Glassware and Related Apparatus. It was approved on behalf of the Council of Standards Australia on 29 November 2002 and published on 14 February 2003.
The following are represented on Committee CH-001: Australian Chamber of Commerce and Industry Nat ion al Ass oci ation ati on of Testi Tes ting ng Aut hor iti es Aus tralia tra lia Nat ion al Sta ndards nda rds Com missi mi ssi on . m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
Royal Australian Chemical Institute Royal College of Pathologists of Australasia Science Industry Australia University of New South Wales University of Sydney
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This Standard was issued in draft form for comment as DR 01225.
AS 2164—2003 2164—2003
Australian Standard™ . m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
Laboratory glassware—One-mark glassware—One-mark volumetric flasks
Originated as R20—1953. Previous edition AS 2164—1995. Third edition 2003.
COPYRIGHT
© Standards Australia International All rights are res erved. No part of this wor k may be reproduce d or copied in any form o r by any means, electronic or mechanical, including photocopying, without the written permission of the publisher. Published by Standards Australia International Ltd GPO Box 5420, Sydney, NSW 2001, Australia ISBN 0 7337 4957 7
AS 2164 —200 3
2
PREFACE
This Standard was prepared by the Standards Australia Committee CH-001, Laboratory Glassware and Related Apparatus to supersede AS 2164—1995, Laborato Labo ratory ry glasswa gla ssware— re— One-mark volumetric flasks. flasks . This edition is based o n ISO 1042:1998, Laborat Labo ratory ory glasswa gla ssware—O re—Onene-mar markk volu metric metr ic flasks. flas ks. This Standard differs from ISO 1042 in that it refers to AS 2162 for information on verification and use, and requires markings appropriate to the type of glass used. The objective of this Standard is to provide a specification for one-mark volumetric flasks required for general use in laboratories
. m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
This Standard varies from the previous edition in that the dimensions of the complete range of flasks now conform with those of ISO 1042:1998. This edition includes the addition of flasks with capacities of 1, 2, 20 and 5000 mL. It also includes flasks with conical body shape and flasks with a wider neck.
3
AS 2 164— 2003
CONTENTS
Page FOREWORD ................................................................... ..................................................................................................... ...........................................................4 .........................4
. m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
1
SCOPE ................................................................... ..................................................................................................... .....................................................5 ...................5
2
REFERENCED DOCUMENTS ................................................................... ..................................................................................5 ...............5
3
DEFINITIONS ..................................................................... ......................................................................................................... .......................................5 ...5
4
CLASSES OF ACCURACY ................................................................. .......................................................................................5 ......................5
5
SERIES OF CAPACITIES ..................................................................... ..........................................................................................5 .....................5
6
MENISCUS.................................................................................................................6
7
ACCURACY...............................................................................................................6
8
CONSTRUCTION CONSTRUCTION ..................................................................... ......................................................................................................6 .................................6
9
GRADUATION LINE.......................................................... LINE............................................................................................. .......................................9 ....9
10
MARKING..................................................................................................................9
11
VISIBILITY OF GRADUATION LINE, FIGURES AND INSCRIPTIONS.............10
AS 2164 —200 3
4
FOREWORD
Volumetric flasks together with analytical balances are the fundamental tools for the preparation of volumetric standard solutions – the basis of chemical analysis. The design of narrow-necked class A volumetric flasks has been optimized to achieve the fewest possible permitted errors. With the increasing popularity of piston-operated pipettors, there is market pressure for the manufacture of volumetric flasks with wider necks so that pipettor tips may be inserted to remove solution directly. Wide-necked flasks will of necessity be of lower accuracy than the corresponding capacities of narrow-necked flasks and the insertion of any extraneous device may introduce other errors. . m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
It is therefore recommended that narrow-necked class A volumetric flasks are used for the production of standard solutions and where necessary, a suitable quantity should be poured into an intermediate vessel into which the pipettor tip may be introduced. In accordance with good laboratory practice, only narrow-necked class A volumetric flasks conforming to this Standard should be used for precise analytical purposes.
5
AS 2 164— 2003
STANDARDS AUSTRALIA
Australian Standard Laboratory glassware—One-mark volumetric flasks 1 SCOPE
This Standard specifies requirements for a series of one-mark v olumetric flasks, suitable for general laboratory purposes. Two Classes of accuracy are specified, Class A volumetric flasks being of higher accuracy than Class B volumetric flasks. NOTE : The Th e met hod of verifi ver ifi cat ion and notes not es for the use of one- mark mar k volume vol ume tric tri c fla sks are given giv en in AS 2162.1. . m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
2 REFERENCED DOCUMENTS
The following documents are referred to in this Standard. AS 2162 2162.1
Verification and use of volumetric apparatus Part 1: General—Volumetric glassware
2409
Interchangeable conical ground glass joints
3 DEFINITIONS
For the purpose of this Standard, the definitions below apply. 3.1 Capacity
The volume of water at 20°C, expressed in millilitres, contained by the flask at 20°C when filled to the graduation line. 3.2 Neck
That part of the flask which is of apparently uniform internal diameter. 3.3 Reference temperature
The Standard temperature of 20°C at which the volumetric flask is intended to contain its nominal volume (nominal capacity). 3.4 Unit of volume
The term millilitre (mL) is in accordance with the International System of Units (SI). 4 CLASSES OF ACCURACY
Two classes of accuracy are specified— (a)
Class A for the higher grade; and
(b)
Class B for the lower grade.
5 SERIES OF CAPACITIES
The series of capacities of one-mark volumetric flasks are as follows: 1, 2, 5, 10, 20, 25, 50, 100, 200, 250, 500, 1000, 2000 and 5000 mL All these flasks may be finished with a plain neck or be provided with a stopper. NOTE : If volume vol ume tric tri c fla sks of capa cit ies other oth er tha n thos e lis ted above abov e are requ ired, ired , it is recommended that they conform, as far as possible, to the essential requirements of this Standard.
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AS 2164-2003, Laboratory glassware - One-mark One-mark volumetric flasks . m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
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