WebDec 17, 2024 · GC: 7890A; MS:5975C; Autosampler: Gerstel; Method Info: Split or spitless injection (issue occurs in either mode) Injection volume 2ul (1ul was used to see if … Webwe have a GC-MS with a DB-HeavyWax Column. Yesterday we changed the column for a new one (the same). The retention times of our samples shifted 8-11 min. Now, the peaks appear 8-11 min later. We are using a flow of 1.8 mL/min, if we try to do a retention lock, the pressure would be so high. The new column is the same model as the old one.

Methanol peak shape inconsistency on DB-624 column

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8 Common Gas Chromatography Mistakes Chromatography Today

WebOct 20, 2016 · Find the alkanes on either side of the peak you are interested in and divide the time between them into 100 segments, then calculate how many segments after the first peak your aldehyde elutes ... Web2. Connect an Ethernet Cable (Internet Cable) to the back of the GCQuad (GC3 or GCHawk) and then connect that cable directly to your Computers Ethernet port. 3. Be sure that your … Web1. Remove the USBc cable as the connection type 2. Connect an Ethernet Cable (Internet Cable) to the back of the GCQuad (GC3 or GCHawk) and then connect that cable directly to your Computers Ethernet port. 3. Be sure that your computer has internet access during this process through a Wireless source so that FSX PLAY will be able to open. 4. iqiyi announces 2021 financial results