USP columns
Posted: Sat Jan 31, 2015 4:53 pm
by Besma2
HI everyone
my question concerns HPLC Columns propose in USP, is there a difference between aordinnaire (L1) C18 column and columns ( L1 endcapped , base deactivated )
thank you
Re: USP columns
Posted: Mon Feb 02, 2015 7:52 am
by HPLCaddict
Yes and no, there might be a difference. The designation "L1" applies to the whole plethora of C18 columns available. But not every of these columns is base-deactivated and endcapped. So "L1 endcapped, base deactivated" is only a subset of that vast array.
In other words, every "L1, endcapped, base-deactivated" column is also an ordinnaire "L1"-column, but not every "L1"-column is also endcapped and base-deactivated.
Re: USP columns
Posted: Mon Feb 02, 2015 8:29 am
by Gerhard Kratz
Excellent explanation HPLCaddict.
Re: USP columns
Posted: Mon Feb 02, 2015 11:21 am
by Besma2
thank you for your explanation
