GB/T 9172-1988
Abolished
GB/T 8312-2013
Active
National standards
GB/T 8312-2013 Tea—Determination of caffeine content
GB/T 8312-2013 Tea—Determination of caffeine content
Basic Information
Standard Code:
GB/T 8312-2013
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Basic standards and general methods
ICS Name:
Tea
Publish Date:
2013-12-31
Implement Date:
2014-06-22
Pages:
5 pages
Scope
This standard specifies the instruments and tools, reagents and solutions, operating methods, and methods of calculating results for determining caffeine in tea by high-performance liquid chromatography and ultraviolet spectrophotometry.
This standard is applicable to the determination of caffeine in tea and also to the determination of caffeine in solid instant tea.
Development Information
Replace the following standards
Referenced Standards
Adopt standards
ISO 10727:1995
Related Standards
GB/T 14487-1993
Replaced
GB/T 14487-1993 The terms of tea sensory tests
GB/T 14456-1993
Replaced
GB/T 14456-1993 Green tea
GB/T 13738.1-1997
Replaced
GB/T 13738.1-1997 The first set of broken black tea
GB 18665-2002
Replaced
GB 18665-2002 Mengshan Tea
GB/T 9833.1-2002
Replaced