Sievers 255 NCD detector
Posted: Fri Feb 09, 2018 7:43 pm
by GGConsulting7
Everything seems to be ok, the vacuum pump and everything else, but there are random peaks that show up even when a sample is not injected. Could this be contamination? Or perhaps an electrical issue?
Re: Sievers 255 NCD detector
Posted: Fri Feb 09, 2018 8:27 pm
by HPLC chemist
I would suspect electrical. Put a surge protector between the electrical outlet and the NCD.
https://www.agilent.com/cs/library/user ... -90006.pdf
Re: Sievers 255 NCD detector
Posted: Wed Feb 14, 2018 1:59 pm
by GasMan
Always look at the shape of the 'random peaks'. If they are Gaussian, it is unlikely to be electrical. If you have Gaussian peaks, they have come from the column or inlet.
Gasman