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4-Ethyldibenzothiophene
15% v/v Hydrochloric Acid / tr Nitric Acid / tr Hydrofluoric Acid
6'-Octabromodiphenyl ether
6-Trimethylnaphthalene
1000 µg/mL (anhydrous)
EC HPLC guard column (analytical), NUCLEODUR C18 Pyramid, 3 µm, 4x3 mm 0.4 mm gauge 4-EthyldibenzothiopheneFor protection of your main HPLC column from contamination, it is recommended to use guard columns. These short columns are placed into a guard column holder. The guard column holder in combination with a guard column inside is installed between the injector and the HPLC column. This installation prevents chemical impurities to reach the main column. Because a contamination could form an irreversible bond with the column packing material (stationary
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