![EC HPLC guard column (analytical), NUCLEOSHELL RP 18plus, 5 µm, 4x3 mm [55019-50][MICROLAB] 1202865-43-7](https://cdn.shopify.com/s/files/1/0296/2155/1241/products/HPLC_guard_column_EC_4-3_NUCLEOSIL_NUCLEODUR_NUCLEOSHELL_chromatography_2a7443a1-0de0-4e4e-9b7d-762a4e72f8a7.jpg?v=1740396546)
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1202865-43-7
Warfarin-d5 (phenyl-d5)
Hf ICP-OES 208
Lutetium 1000 mg/l for ICP
60145-23-5
EC HPLC guard column (analytical), NUCLEOSHELL RP 18plus, 5 µm, 4x3 mm [55019-50][MICROLAB] 1202865-43-7For 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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