Chromatography Forum

Posted: **Fri Jul 04, 2008 12:41 pm**

I would like to know if I can use a precolumn filter whithout a guard column?

thank you

Posted: **Fri Jul 04, 2008 6:15 pm**

Posted: **Sat Jul 05, 2008 6:20 am**

Yes you can, but a precolumn filter gives you less protection than a guard column. If indeed the problem is only particulate debris, then both work equally well. If the problem is something else, guard columns provide a better protection.

Posted: **Mon Jul 07, 2008 12:59 pm**

I've heard so much about guard column, in what circumstances do we use a guard column? And what is a guard column?

Posted: **Mon Jul 07, 2008 4:00 pm**

I've heard so much about guard column, in what circumstances do we use a guard column? And what is a guard column?

http://www.restek.com/aoi_general_A015.asp

Especially useful if the sample matrix is not particularly "clean".

Chromatography Forum

pre column filter or guard column

pre column filter or guard column

Guard column?

Re: Guard column?