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氯霉素 BePure-21031YM
Column Selectivity Test Mixture for Liquid Chromatography
MIX 2 B-Trichothecene mixture (DON, NIV, 3AcDON & 15-DON)
Sodium alginate
KDWR Volatile Organic Compounds Mixture #B 100ug/ml in Methanol
螺甲螨酯醇
肉桂酸乙酯标准品
AMIDE TEST MIXTURE,1ML,ACN:WATER(50:50)& 标准品
丁醛-2,4-DNPH
Pesticide-Mix 67,10ng/ul 标准品
