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BS EN ISO 4787:2021

BS EN ISO 4787:2021

$142.49

Laboratory glass and plastic ware. Volumetric instruments. Methods for testing of capacity and for use

Published By Publication Date Number of Pages
BSI 2021 30
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PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
10 3 Terms and definitions
4 Principle
5 Volume and reference temperature
5.1 Unit of volume
5.2 Reference temperature
6 Apparatus and calibration liquid
6.1 Balance
6.2 Measurement devices
11 6.3 Calibration liquid
6.4 Receiving vessel
7 Factors affecting the accuracy of volumetric instruments
7.1 General
7.2 Temperature
7.2.1 Temperature of the volumetric instrument
7.2.2 Temperature of calibration liquid
12 7.3 Cleanliness of surface
7.4 Conditions of used volumetric instruments
7.5 Delivery time and waiting time
13 8 Setting the meniscus
8.1 General
8.2 Setting the meniscus
8.2.1 Meniscus of transparent liquids
15 8.2.2 Meniscus of opaque liquids
9 Calibration procedure
9.1 General
9.2 Test room
9.3 Filling and delivery
9.3.1 Volumetric flasks and measuring cylinders
9.3.2 Pipettes adjusted to deliver
16 9.3.3 Pipettes adjusted to contain
9.3.4 Burettes adjusted to deliver
17 9.3.5 Pycnometers
9.4 Weighing
9.5 Volume and uncertainty calculation
18 10 Procedure for use
10.1 General
19 10.2 Volumetric flasks (in accordance with ISO 1042 or ISO 5215)
10.3 Measuring cylinders (in accordance with ISO 4788 orISO6706)
10.4 Burettes (in accordance with ISO 385)
20 10.5 Pipettes
10.5.1 Pipettes adjusted to deliver (seeISO 648andISO 835, or other pipettes, e.g. plastic ones)
10.5.2 Pipettes adjusted to contain
10.6 Pycnometers
21 Annex A (informative) Cleaning of volumetric glassware
22 Annex B (informative) Cleaning of volumetric plasticware
23 Annex C (normative) Calculation formulae and tables
27 Annex D (informative) Coefficient of cubic thermal expansion
28 Annex E (informative) Uncertainty estimation and repeatability calculation
29 Bibliography

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BS EN ISO 4787:2021
$142.49