Natural Science Forum / Chemistry / Analytical Chemistry / March 2008

Due to the actual workload in our lab, it is impossible to perform
every day a 4 point calibration for 10 different cations. Therefore we
want to check the calibrationcurve with 1 standard solution. But what
is the max allowed deviation between obtained result and the

I have been using the Agilent 1100 HPLC for analysis of my corn
fermentations and I usually get great results, over the last year or so
I have noticed numerous problems with the quality of my acetic acid
peaks.  I have a new column in the unit and still I spend half my time

I am new to this group and also new to HPLC systems.
I need to know basic difference between isocratic HPLC ,Gradient
HPLC,Quarternary HPLC  and if any other type is available.
Can any one guide me please.

i m just new in Analytical at +nt i m learning HPLC.I m working on
Agilent 1100 series HPLC System.please tell me in briefly or detailed
about offline instrument its use and applications.