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See Chinese contents: GB/T 5009.18-2003 GB/T 5009.18-2003: Determination of fluorine in foods
This standard specifies the method for determination of fluorine in foods such as grains, vegetables, fruits, beans and their products, meat, fish, eggs. This standard applies to the determination of fluorine in foods. The fluoride ion selective electrode method is not suitable for the specimens which have higher fat content but are not ashed.
