Precolumns are available in 2 cm and 5 cm lengths. Both lengths are used in conjunction with a column end fitting. They can be used as analytical columns, but a more typical use is as a guard column installed between the injector and the analytical column.
INJECTORS, SELECTORS, AND VALVES (Which one do I need?) ACTUATORS FITTINGS PRODUCTS FOR GC LIQUID HANDLING ADDITIONAL PRODUCTS UHPLC / NANO LC
PRODUCT SUPPORT VALVE APPLICATIONS CHROMATOGRAMS GENERAL REFERENCE UNIT CONVERSION REGULATORY SUPPORT