BS ISO 20481:2008
Current
The latest, up-to-date edition.
Coffee and coffee products. Determination of the caffeine content using high performance liquid chromatography (HPLC). Reference method
Hardcopy , PDF
English
30-06-2008
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Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sampling
7 Preparation of test samples
8 Procedure
9 Calculation
10 Precision
11 Test report
Annex A (informative) - Precision data of validation
study on caffeine determination in coffee
and coffee products
Bibliography
Describes a high performance liquid chromatography (HPLC) method for the determination of the caffeine content of: green coffee; roasted coffee; soluble coffee, regular and decaffeinated; and mixed instant coffee products (e.g. coffee/chicory mix or cappuccino-type coffee drink).
| Committee |
W/-
|
| DevelopmentNote |
Supersedes 06/30154825 DC. (06/2008)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard specifies a high performance liquid chromatography (HPLC) method for the determination of the caffeine content of: green coffee; roasted coffee; soluble coffee, regular and decaffeinated; and mixed instant coffee products (e. g. coffee/chicory mix or cappuccino-type coffee drink).
| Standards | Relationship |
| ISO 20481:2008 | Identical |
| ISO 11817:1994 | Roasted ground coffee Determination of moisture content Karl Fischer method (Reference method) |
| ISO 5725-1:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions |
| ISO 1042:1998 | Laboratory glassware — One-mark volumetric flasks |
| ISO 648:2008 | Laboratory glassware — Single-volume pipettes |
| ISO 565:1990 | Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of openings |
| ISO 3726:1983 | Instant coffee — Determination of loss in mass at 70 degrees C under reduced pressure |
| ISO 20938:2008 | Instant coffee — Determination of moisture content — Karl Fischer method (Reference method) |
| ISO 5725-6:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy values |
| ISO Guide 30:2015 | Reference materials — Selected terms and definitions |
| ISO 5725-2:1994 | Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| ISO 6673:2003 | Green coffee — Determination of loss in mass at 105 degrees C |
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