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organic mercury species are more toxic than inorganic mercury species
65281-77-8
Enalaprilat-d5 (phenyl-d5)
1 µg/mL (1 ppm) for ICP-MS in H2O
EC HPLC guard column (analytical), UNIVERSAL RP, 4x2 mm 200.7 Interference Checks specific > ul { margin:For 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