Thank you for your advice. Unfortunally not only EM test failed but several others as well. we tried to run it last,first, and even not to run it at all
The GC Calculators and Method Translation Software (MTS) is available for download from Agilent.com . The package includes:
The Vapor Volume Calculator . It can be used to determine the expansion volume of a GC sample solvent at a given inlet temperature…
Hi, Here's a screenshot of the system suit, there is no blank subtraction The analyst said he has used the same processing method for a different run with no issues the only difference being that for those runs the MS setting was the same time as the…
The basic tools I would recommend to have for GC maintenance:
Ceramic column cutter
1/4" wrench (column nuts)
7/16" wrench (gas fittings at back of GC)
1/2" wrench (replace gold seal on S/SL inlet)
Torx 20 driver (removing FID collector assembly…
Agilent GC 7890A, FID, Split Liner. I'm setting up the column to do Hexane injection testing. It was set up this way previously but the program had been deleted and the column removed before I started here. Front Detector/Column which is below baseline…
Hello and Help!
My GC-FID's inlet pressure stays at 0.7 psi and does not reach the setpoint of 10 psi. Makeup gas reaches the 25 psi setting. Liner and septa are fine. I unscrewed the inlet column nut and placed my finger at the bottom of the inlet…
Hello,
My laboratory runs a multilevel calibration with internal standards on a headspace-GC-FID. Our sequence is set up to replace each level of the curve after each calibrator is analyzed and then calculate the concentration of the analyte with the…
I'm going to be calibrating for ethanol on my HS-GC-FID 6890, but I'm having discrepancies between two standards. The standard that I will be calibrating with (Restek's Residual Solvents #1 34105) is 3000ug/mL in N,N-Dimethylacetamide. I'm verifying the…
When you say that there are no signs of a leak, have you run a pump leak rate test using Agilent Lab Advisor? If not, I would suggest testing this. If you're unlucky enough for your peak to elute just at the point when the outlet ball valve fails to close…
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...