GPC/SEC Troubleshooting
GPC/SEC Troubleshooting has been developed by PSS and Separation Science. It is published bimonthly in ChromDoctor section of Separation Science Magazine since March 2010:
|
Author |
Title |
Question |
Sep.Science |
|
|---|---|---|---|---|
|
D. Held |
#4 Unexpected peak shapes – different shapes than others |
I have measured calibration standards to create a calibration curve and they look different from the manufacturer ’s peaks. What is wrong? |
magazine link | |
|
D. Held |
#3 Additional Gost or System Peaks |
I see a lot of peaks, especially in the low molar mass region of the chromatogram. Is that normal? |
magazine link | |
|
D. Held |
#2 Missing Signal |
I have injected a sample and I don't see a signal. What can be the reason for this? | ||
|
D. Held |
#1 Pressure Increase |
My GPC/SEC system runs at a pressure of 80 bar/1160 psi. Now the system pressure has been increased and the pump has shut down to protect the columns. What should I do? |