Microbore column end fittings
![microbore column end fittings](../vfit/images/cef-microbore.jpg)
Microbore column end fittings have a .25 mm bore. We offer versions with internal or external fittings, with or without a 2 micron frit installed.
Replacement frits
![frits for column end fittings](../vfit/images/frits.jpg)
Replacement frits for our column end fittings are available in titanium, stainless, and Hastelloy C, in a variety of ODs.
HPLC pre-column
![guard column](../vfit/images/guard-columns.jpg)
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.