I have an 1100 HPLC and it is being used for Hemp sample testing. I have been using it with success for a few months. I ran a Calibration Curve about 3 weeks ago. Last week we ran about 15 samples of concentrates. 2 tested high in CBG which is unusual considering that the flower previously tested had none. Only CBDA was in Flower. I ran the Sequence immediately after the 1st run of 15 was finished and the CBG numbers were gone and back to CBD.
These 2 samples were in position 1 and 2 in tray.
The other 13 samples ran again as well and are almost exactly the same results as their 1st run.
I did not run any blanks. I allowed the 1100 to pump before running samples, but only for about 15 min
Any advice is appreciated.