氢氧化钙 for the preparation of DIN 19266 pH standard buffer solutions

六水合硫酸亚铁铵 分析级 EMSURE ISO

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十二水合硫酸铁铵 分析级 EMSURE ACS, ISO, Reag. Ph Eur

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硫氰酸汞 分析用优级纯 EMSURE Reag. Ph Eur

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异丙醇 standard for the analysis of tobacco

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锆 ICP 标准液 10,000 mg/l traceable to SRM from NIST ZrOCl in HCl 10% 10000 mg/l Zr CertiPUR

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分子筛 0.3nm rods ~ 1.6 mm (1/16)"

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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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药典色度标准品GY系 for testing the colour intensity acc. to Ph. Eur. GY1-GY7 CertiPUR

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