ISO 3103 is a standard published by the International Organization for Standardization (commonly referred to as ISO). It specifies a standardized method for brewing tea, originally laid down in 1980 as ISO 3103:1980. It was produced by ISO Technical Committee 34 (Food products), Sub-Committee 8 (Tea).

The abstract states the following:

The method consists in extracting of soluble substances in dried tea leaf, containing in a porcelain or earthenware pot, by means of freshly boiling water, pouring of the liquor into a white porcelain or earthenware bowl, examination of the organoleptic properties of the infused leaf, and of the liquor with or without milk or both.

This standard is not meant to define the only proper method for brewing tea, but rather how to brew tea "for use in sensory tests". An example of such test is a taste-test to establish which blend of teas to choose for a particular brand in order to maintain a consistent tasting brewed drink from harvest to harvest.

More on [ ISO 3103 ]

Library of Congress: What's New in Science Reference

New Science Reference Guide: Aeronautics- A Selected Bibliography
A guide to books used in preparing Aeronautical and Astronautical Resources of the Library of Congress: A Comprehensive Guide. This guide was compiled to accompany a talk by Tom Crouch, senior curator of the Division of Aeronautics at the Smithsonian National Air and Space Museum, on October 24, 2007, at the Library of Congress. His talk, "Aeronautics at the Library of Congress: Forty Years of One User's Expertise." celebrated the publication of a Library of Congress book, Aeronautical and Astronautical Resources of the Library of Congress: A Comprehensive Guide.
New Science Reference Guide: Podcasts, Webcasts & Other Digital Media Files
A quick guide to sources for Podcasts, Webcasts & Other Digital Media Files in Science and Technology.
Update of LC Science Tracer Bullet: Wind Power
Wind power or wind energy is the process by which the wind is used to generate mechanical power or electricity and is one of the fastest-growing forms of electricity generation in the world. An update of TB 81-5, this guide is a review of the literature in the Library's collections on wind power with an emphasis on recent material.
Update: Japanese Science, Technology, and Medicine
An update of Selected Internet Resources for Japanese Science, Technology and Medicine.
New Web cast: Earth's Water Cycle in a Changing Climate
Water is always in motion, changing from liquid to water vapor to ice - on, under and over the surface of the Earth. A leading NASA scientist explained how this water cycle can be affected by a warming climate and what we might expect for the future. Peter Hildebrand, chief of the Hydrospheric and Biospheric Sciences Laboratory at NASA Goddard Space Flight Center, discussed "Earth's Water Cycle in a Changing Climate."
New Science Reference Guide: Earth's Water Cycle and Climate Change
A selected reading list of water cycle and climate change books.

Subscribe to Reference RSS feed