HI all, I encountered an issue where my blank injection baseline shows a wavy trend from 0min - 12 minutes. i have changed my fuel gas as initially, I'm suspecting that my fuel gas purity does not reach 99%.
hope to get an answer soon.
Thank you.
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HI all, I encountered an issue where my blank injection baseline shows a wavy trend from 0min - 12 minutes. i have changed my fuel gas as initially, I'm suspecting that my fuel gas purity does not reach 99%.
hope to get an answer soon.
Thank you.
I'm guessing this is FID since you mention fuel gas - is that correct? Fuel gas impurities can cause some of this. Make sure the gases you are using are 99.9995% purity or higher. Filters and traps on the gas supply lines may help - are any currently installed? I'd also check the data collection rate on the detector. Sometimes too high of a rate can cause excess noise. For most GC analyses, 10-20 Hz will work fine.
I'm guessing this is FID since you mention fuel gas - is that correct? Fuel gas impurities can cause some of this. Make sure the gases you are using are 99.9995% purity or higher. Filters and traps on the gas supply lines may help - are any currently installed? I'd also check the data collection rate on the detector. Sometimes too high of a rate can cause excess noise. For most GC analyses, 10-20 Hz will work fine.