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N-Diethyl toluamide
larger particles have proven useful
Only Inorganic Ventures can give you ALL of these
According to the US EPA criteria
4'-DDT-13C12
EC HPLC guard column (analytical), NUCLEOSIL 100-7 C2, 7 µm, 4x3 mm 325188-6593 N-Diethyl toluamideFor 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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