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1- سازمان ملی استاندارد ایران، 1371. روش تهیه نمونه نرم شده چای و اندازه گیری ماده خشک آن . استاندارد ملی ایران شمارۀ 3272 ، چاپ اول .
2- سازمان ملی استاندارد ایران، 1386. چای سبز و سیاه – اندازه گیری مواد اختصاصی آن -قسمت دوم: تعیین مقدار کل کاتچین ها در چای سبزروش کروماتوگرافی مایع با کارایی بالا. استاندارد ملی ایران، شماره 2-8986 ، چاپ اول .
3- سازمان ملی استاندارد ایران، 1387. چای سبز – ویژگی ها و روش های آزمون. استاندارد ملی ایران، شماره 10768 ،چاپ اول.
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