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BS ISO 19929:2017

$142.49

Plastics. Determination of average molecular mass and mixture ratio of poly(ethylene glycol) and its derivatives by MALDI-TOF-MS

Published By Publication Date Number of Pages
BSI 2017 24
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PDF Catalog

PDF Pages PDF Title
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 Principles
5 Reagents
12 6 Apparatus
13 7 Procedure
7.1 General
7.2 Sample preparation
7.2.1 General
14 7.2.2 Preparation of polymer standard mixtures
7.2.3 Preparation of polymer/matrix/salt solutions
7.2.4 Deposition of the sample on the sample plate (target)
15 7.2.5 Preparation of biopolymer/matrix solutions
7.3 Instrument settings
16 7.4 Spectra recording
8 Data acquisition and processing
8.1 General
8.2 Calibration of mass axis
8.2.1 General
17 8.2.2 Calibration of mass axis using synthetic polymer standards
8.2.3 Calibration of mass axis using biopolymer standards
8.2.4 Self-calibration method
8.3 Generation of mass calibration curve
8.4 Calibration of intensity axis
18 9 Expression of results
9.1 Calculation of molecular mass distribution (MMD)
9.2 Calculation of the number-average molecular mass
9.3 Calculation of peak area
9.4 Constructing calibration curve for intensity
19 9.5 Calculation of mass ratio
10 Precision
11 Test report
11.1 General
11.2 Apparatus
11.3 Calibration
11.4 Results
20 Annex A (normative) Calibrants
21 Bibliography
BS ISO 19929:2017
$142.49