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ISO 18449:2025
International Standard
Green tea — Vocabulary
ISO/TS 5617:2025
International Standard
Tea — Classification by chemical composition
GSO ISO 20715:2024
ISO 20715:2023
Gulf Standard
Tea — Classification of tea types
ISO 5642:2024
International Standard
Tea polyphenol extracts — Definition and basic requirements
GSO ISO 20716:2024
ISO 20716:2022
Gulf Standard
Oolong tea — Definition and basic requirements
OS GSO ISO/TR 21380:2024
ISO/TR 21380:2022
Omani Standard
Matcha tea — Definition and characteristics
OS GSO ISO 20716:2024
ISO 20716:2022
Omani Standard
Oolong tea — Definition and basic requirements
OS GSO ISO 20715:2024
ISO 20715:2023
Omani Standard
Tea — Classification of tea types
GSO ISO/TR 21380:2024
ISO/TR 21380:2022
Gulf Standard
Matcha tea — Definition and characteristics
GSO ISO 18447:2023
ISO 18447:2021
Gulf Standard
Tea — Determination of theaflavins in black tea — Method using high performance liquid chromatography
GSO ISO 3103:2023
ISO 3103:2019
Gulf Standard
Tea — Preparation of Liquor for Use in Sensory Tests
OS GSO ISO 6079:2023
ISO 6079:2021
Omani Standard
Instant Tea in Solid Form — Specification