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LC-MS

Frequently Referenced FAQ

Latest FAQ

FAQ within [ LC-MS ]

121-130 of Total 133

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  • How to check for ESI Pipe problems (LCMS)

    As a result of contamination inside the ESI pipe, adsorption of the sample will occur and/or optimum high voltage will become unable to be applied. These phe... Show Detail

    • No：3309
    • Date of Issue：2020/11/13 10:22
    • Last Updated：2020/12/02 09:46
    • Category： Troubleshooting

  • How to check for DL problems (LCMS)

    Contamination inside the DL tube will cause deterioration of solvent removal (ionization) or decrease in ion transmittance. When there is a blockage in the D... Show Detail

  • How to check for lens problems (LCMS)

    As a result of contamination, it may not be possible to apply optimum voltage, which may decrease the ion transmittance. In addition, contamination of the mu... Show Detail

    • No：3305
    • Date of Issue：2020/11/13 10:18
    • Last Updated：2020/12/02 08:55
    • Category： Troubleshooting

  • Points for Auto-Tuning necessity (LCMS)

    Auto-tuning is often implemented simultaneously in the following maintenance. There is a case that decreased sensitivity is solved only by auto-tuning. In au... Show Detail

    • No：3304
    • Date of Issue：2020/11/13 10:17
    • Last Updated：2020/12/02 08:53
    • Category： Troubleshooting

  • Decrease in sensitivity (LCMS)

    The following factors and solutions are possible.(Please check from the top) 0. Auto-Tuning. Click here for Points for Auto-Tuning necessity. 1. Repl... Show Detail

  • Poor repeatability (LCMS)

    The following factors and solutions are possible.(Please check from the top) 1. Cleaning the Lens. Click here for How to check for lens problems. 2... Show Detail

  • Background level/Noise level is too high (LCMS)

    The following factors and solutions are possible.(Please check from the top) 1. Cleaning the Lens. Click here for How to check for lens problems. 2. ... Show Detail

  • Standard Sample (LCMS)

    For carrying out sensitivity adjustment and atomic mass number adjustment of the instrument uses a mixture of polyethylene glycol 200, 600, 1000, 2000 polypr... Show Detail

    • No：3298
    • Date of Issue：2020/11/13 10:14
    • Last Updated：2022/06/17 13:02
    • Category： Setting

  • Daily Maintenance (LCMS)

    To suppress contamination or blockage of the ionization unit or interface as much as possible, a daily management of the instrument is required. The followin... Show Detail

    • No：3246
    • Date of Issue：2020/11/13 10:12
    • Last Updated：2022/06/24 12:56
    • Category： Maintenance

  • Stopping the Instrument (LCMS)

    This section describes the procedure for stopping the instrument's vacuum system and up to turning the power OFF. HINT: The vacuum status affects the instru... Show Detail

    • No：3297
    • Date of Issue：2020/11/13 10:09
    • Last Updated：2022/06/17 14:22
    • Category： Setting

121-130 of Total 133

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