A 5% H2 blend should work also. If you're using multiple calibration standards, make sure the range of the standards matches or exceeds the expected range in your samples.
One thing to watch for: I have seen instances where H2 saturates the TCD at high…
Offsetting the axes, Y or X, is not a feature in MassHunter. You can do head to tail comparison.
Overlaying in different colors and choosing which one is active can be done but there's not a way to do what you're asking even in a custom report.…
Good morning. We analyze fatty acids and The compound response factor of each fatty acid before the softwere changed remained fixed now it changes. I tried to copy the various parameters set in the other gas chromatograph which has its own softwere, but…
Hello,
I'm having the same problem with the overwhelming amount of orange highlighting for samples where the qualifier peak was not found. I tried the suggestion above of enabling "Ignore Peaks Not Found" in the method and re-applying it to the batch…
The tune evaluation was written for an orthogonal ion source (SS/Inert/Extractor) system, atune or etune, running helium carrier gas between 0.8 and 1.4 ml/min, at 230° C ion source and 150° C quad temperatures. It may not pass using other temperatures…
Hello,
I am not sure which Agilent software (CDS 2.x , Chemstation, EZChrom) you are using, but most customers use third party software for simulated distillation and other RT vs BP petrochemical calculations. If your need is simpler, you could do…
This Information Applies To: HES ion source in 5977B/C GC/MSD, 7010 triple quadrupole GC/MS systems
Issue
The filaments are replaced as part of routine maintenance, or when they break (zero output current).
Items Required
Gloves, nylon,...
This Information Applies To: Agilent 5977A/B/C GC/MSD
Issue
The Electron Multiplier Horn must be replaced when it is contaminated or the EMV value reaches 3000 V with a clean ion source.
Items Required
Electron multiplier horn (5977B/C:...
This Information Applies To: Agilent 5973/ 5975/5977 GC/MSD with rotary vane foreline pump
Issue:
The oil mist filter is recommended to be replaced annually. If the color of the filter has changed or there is smell from the filter, the oil mist...
This Information Applies To: Agilent EI Source
Issue:
During normal operation of the GC/MS, the EI SST/Inert ion source will need to be disassembled to proceed with abrasive ion source cleaning and / or routine replacement of consumable parts (filaments...
This Information Applies To: Agilent G7129A/B/C Vialsampler
Issue:
Replacing the needle and needle seat of the Vialsampler is required when:
The needle is visibly damaged.
Leaks or blockages in the vialsampler are observed, especially between...
This Information Applies To: Agilent G1311A/B/C, G7111A/B, Quaternary Pumps, and G1310A/B, G7110B Isocratic Pumps, G1312A/B/C, G7112B Binary Pumps
Issue:
How to diagnose no flow or no pressure issues on binary, quaternary, or isocratic pumps.
...
This Information Applies To: Agilent UV and RID detectors
Issue
A clogged flow cell causes high backpressure. The clog can be removed by flushing the system with solvents at high pressure. If you suspect a clog or experience high backpressure due...
This Information Applies To: Agilent G1312X and G7112X binary pumps.
Issue:
A blockage before the pressure sensor, e.g. in a pump head, will not give a high pressure or overpressure system error. Instead, the pump may show one of various error messages...
This Information Applies To: Agilent 1100, 1200, 1260 LC Pumps.
Issue:
The following procedure allows the cleaning of residue from the pump's check valves, often caused by polymerization of aged acetonitrile or salt-based solutions that may prevent...
This Information Applies To: Agilent LC Systems
Issue
After analyzing dirty or concentrated samples, some sample compounds may retain in the column and other parts of the HPLC system. If the column re-equilibration after each run is not enough to...