EC UHPLC guard column (analytical), NUCLEODUR Phenyl-Hexyl, 1.8 µm, 4x3 mm [81130][MICROLAB] 2-Heptanone

2-Heptanone

72885-11-1

38444-77-8

4-Naphthoquinone-d6

Assurance® Grade Alternate Metals III for AA & ICP in 2% HNO3

EC UHPLC guard column (analytical), NUCLEODUR Phenyl-Hexyl, 1.8 µm, 4x3 mm [81130][MICROLAB] 2-HeptanoneFor 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