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20-2024_Chinese: Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides - Part 20: Determination of minor amounts of fluorine and chlorine in rare earth oxides - Ion chromatography method (Chinese: 稀土金属及其氧化物中非稀土杂质化学分析方法 第20部分：稀土氧化物中微量氟、氯的测定 离子色谱法)
English versions: GB/T 13963-2025
305-2025_Chinese: National food safety standard - Determination of bisphenol A
English versions: GB/T 14478-2025
GB 5009.305-2025 Chinese PDF GB 5009.42-2025 20-2024_Chinese: Chemical analysis methods forGB 5009. 305 2025_Chinese: National food safety standard Determination of bisphenol A, bisphenol F and bisphenol S in foods (Chinese: AFS) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 5009. 305 2025
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