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铬标准溶液,7440-47-3,analytical standard,100ug/ml in water
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甲醛水质标样,50-00-0,analytical standard,0.43mg/L in water
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2,4-二硝基甲苯标准溶液,121-14-2,analytical standard,1.00mg/ml in methanol
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柠檬黄标准溶液,1934-21-0,analytical standard,0.50mg/ml in water
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盐酸联苯胺标准溶液,531-85-1,analytical standard,1000μg/ml,in methanol
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苯甲酸,65-85-0,用于合成
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甲醛水质标样,50-00-0,analytical standard,1.41mg/L in water
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硼标准溶液,7440-42-8,analytical standard,100ug/ml in water
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硼标准溶液,7440-42-8,analytical standard ,1000ug/ml in water
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日落黄标准溶液,2783-94-0,analytical standard,0.500mg/ml in water,for food analysis
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