Tea Preparation of ground sample of known dry matter content

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

01-08-1980

Publisher

International Organization for Standardization

The method consists in grinding of the sample, and determination of the dry matter content of the ground sample by heating a test portion in an oven at 103 +/-2 degrees centigrade to constant mass.

DevelopmentNote	Also numbered as BS 6049-1(1981) (09/2005)
DocumentType	Standard
Pages	2
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
NFV 03 341 : 1981	Identical
IS 13852 : 1994(R2014)	Identical
GOST ISO 1572 : 2013	Identical
PN ISO 1572 : 1996	Identical
BIS IS 13852 : 1994(R1999)	Identical

BIS IS 16027 : 2012	TEA AND INSTANT TEA IN SOLID FORM - DETERMINATION OF CAFFEINE CONTENT - METHOD USING HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY
DIN ISO 14502-2:2007-12	DETERMINATION OF SUBSTANCES CHARACTERISTIC OF GREEN AND BLACK TEA - PART 2: CONTENT OF CATECHINS IN GREEN TEA - METHOD USING HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY
BS ISO 14502-1:2005	Determination of substances characteristic of green and black tea Content of total polyphenols in tea. Colorimetric method using Folin-Ciocalteu reagent
ISO 19563:2017	Determination of theanine in tea and instant tea in solid form using high-performance liquid chromatography
ISO 10727:2002	Tea and instant tea in solid form — Determination of caffeine content — Method using high-performance liquid chromatography
03/312776 DC : DRAFT AUG 2003	BS ISO 14502-1 - TEST METHODS FOR SUBSTANCES CHARACTERISTIC OF GREEN AND BLACK TEA - DETERMINATION OF TOTAL POLYPHENOLS IN TEA - COLORIMETRIC METHOD USING FOLIN-CIOCALTEU REAGENT
BS ISO 11287:2011	Green tea. Definition and basic requirements
ISO 14502-1:2005	Determination of substances characteristic of green and black tea Part 1: Content of total polyphenols in tea Colorimetric method using Folin-Ciocalteu reagent
BS 6048:1987	Specification for black tea
DIN ISO 14502-1:2007-11	DETERMINATION OF SUBSTANCES CHARACTERISTIC OF GREEN AND BLACK TEA - PART 1: CONTENT OF TOTAL POLYPHENOLS IN TEA - COLORIMETRIC METHOD USING FOLIN-CIOCALTEU REAGENT
BS ISO 10727:2002	Tea and instant tea in solid form. Determination of caffeine content. Method using high-performance liquid chromatography
BS 7820-1:1995	Analysis of tea and tea products Tea and instant tea. Determination of caffeine content
BS ISO 3720:2011	Black tea. Definition and basic requirements
ISO 3720:2011	Black tea Definition and basic requirements
16/30300851 DC : 0	BS ISO 19563 - DETERMINATION OF THEANINE IN TEA AND INSTANT TEA IN SOLID FORM USING HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY
BS ISO 14502-2:2005	Determination of substances characteristic of green and black tea Content of catechins in green tea. Method using high-performance liquid chromatography
DIN ISO 10727 E : 2004	TEA AND INSTANT TEA IN SOLID FORM - DETERMINATION OF CAFFEINE CONTENT - METHOD USING HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY
BS ISO 19563:2017	Determination of theanine in tea and instant tea in solid form using high-performance liquid chromatography
ISO 14502-2:2005	Determination of substances characteristic of green and black tea Part 2: Content of catechins in green tea Method using high-performance liquid chromatography
DIN ISO 10727:2004-05	Tea and instant tea in solid form - Determination of caffeine content - Method using high-performance liquid chromatography (ISO 10727:2002)
03/312777 DC : DRAFT AUG 2003	BS ISO 14502-2 - TEST METHODS FOR SUBSTANCES CHARACTERISTIC OF GREEN AND BLACK TEA - DETERMINATION OF CATECHINS IN GREEN TEA - METHOD USING HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY
ISO 11287:2011	Green tea Definition and basic requirements