EC UHPLC guard column (analytical), NUCLEODUR Phenyl-Hexyl, 1.8 µm, 4x3 mm [81130][MICROLAB] 20636-48-0

20636-48-0

N-_Methyl-N-(perfluorooctane-1-sulfo_nyl)glycine-d3

72885-11-1

5-cyclocholestane

2-Heptanone

EC UHPLC guard column (analytical), NUCLEODUR Phenyl-Hexyl, 1.8 µm, 4x3 mm [81130][MICROLAB] 20636-48-0For 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