How to Create an Internal Standard Calibration Curve in OpenLab ChemStation
when you watch the video above, you will see the graphs in the below picture
my question is what causes the zigzag pattern, the pressure? 
How to Create an Internal Standard Calibration Curve in OpenLab ChemStation
when you watch the video above, you will see the graphs in the below picture
my question is what causes the zigzag pattern, the pressure?
thank you for the reply.
when we run samples, we sometimes got really weird things. can you help me further what the problem could be. the picture below is just a water sample
also the following picture looks similar to the pattern shown in my first question?
this one is a brine water sample
is it because we run brine water on HPLC and it has caused the system too dirty?
thanks so much
Please click on 
I can't tell everything you are looking at. The window will tell you what the signals are and the ranges. Blue and red are pressure? and looks like it's in a run?