ISO 14502-1:2005
Current
The latest, up-to-date edition.
Determination of substances characteristic of green and black tea — Part 1: Content of total polyphenols in tea — Colorimetric method using Folin-Ciocalteu reagent
Hardcopy , PDF
16-03-2005
ISO 14502-1:2005 specifies a method for the determination of the total polyphenol content of leaf teas and instant teas by a colorimetric assay using Folin-Ciocalteu phenol reagent. It is applicable to both green and black tea products.
| DevelopmentNote |
Supersedes ISO/DIS 14502-1 (03/2005)
|
| DocumentType |
Standard
|
| Pages |
10
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| DIN ISO 14502-1:2007-11 | Identical |
| NEN ISO 14502-1 : 2005 C1 2006 | Identical |
| GOST R ISO 14502-1 : 2010 | Identical |
| BS ISO 14502-1:2005 | Identical |
| IS 17804 : Part 1 : 2022 | Identical |
| ISO 3720:2011 | Black tea — Definition and basic requirements |
| BS ISO 11287:2011 | Green tea. Definition and basic requirements |
| BS ISO 3720:2011 | Black tea. Definition and basic requirements |
| ISO 11287:2011 | Green tea — Definition and basic requirements |
| UNE 84676:2017 | Cosmetic raw materials. Plant extracts. Grape seeds powder extract (Vitis vinifera L.) |
| ISO 7516:1984 | Instant tea in solid form — Sampling |
| ISO 1839:1980 | Tea — Sampling |
| ISO 7513:1990 | Instant tea in solid form — Determination of moisture content (loss in mass at 103 degrees C) |
| 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 1572:1980 | Tea — Preparation of ground sample of known dry matter content |
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