EC HPLC guard column (analytical), NUCLEODUR C18 Gravity, 5 µm, 4x3 mm 140-061-645 In the freezer

In the freezer

2-13C2 15N

Potassium 1000 mg/l for ICP-MS

52712-04-6

6-Tetramethylnaphthalene

EC HPLC guard column (analytical), NUCLEODUR C18 Gravity, 5 µm, 4x3 mm 140-061-645 In the freezerFor 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