Agilent 1100 - Bubbles from MCGV to Active Inlet Value w/Hex
Posted: Fri Nov 16, 2018 7:28 pm
Hello,
I have an Agilent 1100 and I am noticing when I run hexane through channel "D" I am seeing loads of tiny bubbles coming from the MCGV to the AIV. I am not noticing this with other solvents I use - Methanol, Water, or IPA.
My degasser was down for a while as it gave the Red LED display indicating the degasser needed service. We felt confident that the micro-vacuum pump went out so we ordered another one and installed it. The Red LED no longer displays and I can hear the vacuum working periodically. Solvents through the other channels don't have the bubble issue I mentioned.
I was attempting to rejuvenate a Raptor ARC-18 column yesterday and was running hexane with no problems for about 45 minutes before I noticed the loads of bubbles coming from the MCGV to the AIV. I switched back to 100% IPA and did not notice the problem.
Does anyone have any insight as to why this happens?
I have an Agilent 1100 and I am noticing when I run hexane through channel "D" I am seeing loads of tiny bubbles coming from the MCGV to the AIV. I am not noticing this with other solvents I use - Methanol, Water, or IPA.
My degasser was down for a while as it gave the Red LED display indicating the degasser needed service. We felt confident that the micro-vacuum pump went out so we ordered another one and installed it. The Red LED no longer displays and I can hear the vacuum working periodically. Solvents through the other channels don't have the bubble issue I mentioned.
I was attempting to rejuvenate a Raptor ARC-18 column yesterday and was running hexane with no problems for about 45 minutes before I noticed the loads of bubbles coming from the MCGV to the AIV. I switched back to 100% IPA and did not notice the problem.
Does anyone have any insight as to why this happens?