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药典色度标准品Y系 for testing the colour intensity acc. to Ph. Eur. Y1-Y7 CertiPUR®
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柠檬醛价格 | 5392-40-5 | 乐研
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硫酸硫酸银溶液 in sulfuric acid (D=1.84 g/ml) for COD determination acc. to DIN 38409-H 43-1
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亚牛磺酸价格 | 300-84-5 | 乐研
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硫酸硫酸汞溶液 in diluted sulfuric acid for determination of COD acc. to DIN 38409-H 43-1 (short-term experience)
Mercury(II) sulfate solution 200 g/l in diluted sulfuric acid for determination of COD acc. to DIN
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硅胶薄层层析板 含荧光指示剂 25 Glass plates 20 x 10 cm for AMD acc. to DIN 38407-F11
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5-氟-1-茚酮 价格 | 700-84-5 | 乐研
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l-亮氨酸价格 | 61-90-5 | 乐研
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聚乙烯醇价格 | 9002-89-5 | 乐研
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盐酸标准液配制在异丙醇溶液 acc. to DIN 51558 part 1 c(HCl) = 0.1 mol/l (0,1 N) TitriPUR®
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