Hi dhanong, If you have 10 GC at 2 fids per GC all on at the same time using 40ml/min of H2, thats only 0.8litres per minute. I am not sure what the max would be, but I have seen that many GC on 1/8th inch line. The tricky part is when you get to the…
Hi all, I'll contribute to this topic with a few comments. I'm in no way a GC expert but I have been working with a GC-MS, basically on my own, for about a year now and I have been trying to gain knowledge on how to best operate the machine. Please correct…
Hi, we are currently unable to get Helium. We'll run our Helium gas inventory in a few weeks. Between other applications for our facility, it is used as a carrier gas on our GCs for solvent analysis (validated method). I'm copying our method below. Would…
Resurrected a 6890 which has not been used for a while. When the chemstation is turned on, it gives message of "Limits fail: liner(injection)". Pulled out and cleaned/replaced microseal (fine), glass liner with o-ring (no physical samage) and golden seal…
Hi Nick- Thanks for that information! I'm not sure if that's the cause here. It was 8 million when it was installed in December 2015, in August 2016 it was 9 million, March 2017 it was 8 million, April 2017 was 7 million, then August 2017 it was only…
I am having trouble separating methyl methacrylate (MMA) from another peak. The interfering compound, appearing in the front, is identified by library as 3,3-dimethyl-2-butanone and it is inherent to the sample. MMA appears as the split/tailing peak.…
Thanks ryoboyle and dheyaaldeen . I renamed the 4 files (config.reg, ChemStationPerInstrumentSettings.config, instrument.config, RapidControl.InstrumentConfig.xml). I do not have a user.mac file in the CORE folder. The program opened once and I reconnected…
Hi all, The GC in my lab is Agilent 7820A that my supervisor bought it 2-3 years ago. The configuration of GC is as follows: - One detector FID - One inlet Split/Splitless - One line for gas sample and One gas sampling valve. However, I am not sure there…
megaflorch - this was fairly old topic and I wasn't sure if you completed your standards/sample prep. I use a similar technique to get my analytes within a better working linear range with respect to my GC-FID. Your logic is good.... here is my standard…
I have a simple syntax question (I think). I am trying to get the statement below to work, but am having a problem with the syntax at the Select statement. Any advice would be great: I tried this and it is failing at " x. GetCustomField ( "Sample Weight…
This Information Applies To: Agilent 5000 Series ICP-OES Instruments
Issue
The spectrometer incorporates interlocks and covers that are used to monitor critical operations to ensure Operator and instrument protection. If the instrument is used in...
This Information Applies To: Agilent ICP-OES Systems (700 Series, 5000 series)
Issue
If any yellow or orange coloration on any part of the torch is observed (not due to the sample being presented or recently run) or if the torch appears to be visibly...
This Information Applies To: Agilent 700 Series ICP-OES Systems
Issue
The 700 Series ICP-OES requires regular maintenance, and routine maintenance tasks are able to be performed by the instrument operator.
Any maintenance procedures not...
This Information Applies To: Agilent 5000 Series ICP-OES (5100/5110/5800/5900)
Issue
Correct ventilation is required to ensure proper function of the ICP-OES.
Resolution
The ICP-OES must be located under a flue that is vented by an exhaust...
This Information Applies To: Agilent demountable torches
Issue
The Agilent 5000 series ICP-OES instruments can be fitted with a demountable, semi-demountable, or bonded torch. The demountable and semi-demountable torches can be disassembled for...
This Information Applies To: 5100, 5110, 5800, and 5900 ICP-OES instruments
Issue
The ICP-OES operator can identify the source of plasma ignition failure. The main cause is air entering the plasma.
Steps to follow
Excessive air entering...
This Information Applies To: Agilent ICP-OES 5000 Series (5100/5110/5800/5900)
Issue
How to run the ICP-OES Performance Test after installation, preventative maintenance, repairs, and when troubleshooting.
Steps to Follow
The ICP-OES Performance...
This Information Applies To: Agilent 5000 Series ICP-OES
Issue
Blocked nebulizers are the source of many instrument performance issues including loss of sensitivity and poor precision, especially when running organics, high solids, or high salt...
VGA Setup
Multiple Results
This Information Applies To: Agilent VGA 77 (Vapour Generation Accessory)
Issue: This article discusses the setup steps for the VGA 77.
VGA 77
Warning : Noxious Fumes and Corrosive Liquids. Vapor generation methods of analysis involve...
This Information Applies To: Agilent VGA 77 Accessory
Issue: The Agilent Vapor Generation Accessories use high concentrations of HCl and require thorough cleaning to maintain optimum working condition.
Warning : The Vapor Generation...