Determination of substances characteristic of green and black tea — Part 2: Content of catechins in green tea — Method using high-performance liquid chromatography
€0.00
Determination of substances characteristic of green and black tea — Part 1: Content of total polyphenols in tea — Colorimetric method using Folin-Ciocalteu reagent
Green tea — Definition and basic requirements
€51.00
Black tea — Definition and basic requirements
White tea — Definition
Instant tea in solid form — Determination of moisture content (loss in mass at 103 degrees C)
€21.00
Tea — Determination of theaflavins in black tea — Method using high performance liquid chromatography
€155.00
Determination of theanine in tea and instant tea in solid form using high-performance liquid chromatography
€115.00
White tea — Definition and basic requirements
€77.00
Analysis of tea - Determination of total ash
€41.78
Analysis of tea - Determination of loss in mass of unground tea at 103 °C
Analysis of tea - Preparation of ground sample of defined dry matter content
