FAQ - Frequently Asked Questions

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Frequently Referenced FAQ

Latest FAQ

FAQ within [ Solvent Delivery Module ]

61-70 of Total 72

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  • Peak retention times vary

    Pump 2-propanol to rinse the check valve. However, if a buffer solution is being used, rinse the check valve with purified water first. Then rinse it by pump... Show Detail

    • No：4290
    • Date of Issue：2020/12/03 10:43
    • Brached FAQ

  • No peaks are output

    Check the column using known analytical conditions. If the column has deteriorated, replace it. Confirm whether the solvent delivery pump is functioning pr... Show Detail

    • No：4292
    • Date of Issue：2020/12/03 10:49
    • Brached FAQ

  • Ghost peaking occurs

    Inspect the suction filter for blockage.Also rinse them as described below. 1) Flush with 17 % aqueous phosphate solution for about 30 minutes at a flowra... Show Detail

    • No：4293
    • Date of Issue：2020/12/03 10:52
    • Brached FAQ

  • The baseline drifts

    Inspect the suction filter for blockage. Also rinse them as described below. 1) Flush with 17 % aqueous phosphate solution for about 30 minutes at a flowr... Show Detail

    • No：4294
    • Date of Issue：2020/12/03 10:57
    • Brached FAQ

  • The baseline undulates with the pump stroke

    Click [PURGE] to purge the bubbles. Alternatively, connect a syringe to the drain tube connection port to suction out the bubbles. Click here for Manual P... Show Detail

    • No：4296
    • Date of Issue：2020/12/03 11:00
    • Brached FAQ

  • Cyclic spiky noise is output

    Check whether the noise disappears when solvent delivery stops. Check the solvent delivery flow status (pulsation). If pulsation is large, rinse the flow ch... Show Detail

    • No：4299
    • Date of Issue：2020/12/03 11:05
    • Brached FAQ

  • Sawtooth-shaped noise occurs

    Check whether the noise disappears when solvent delivery stops. Check the solvent delivery flow status (pulsation). If pulsation is large, rinse the flow ch... Show Detail

    • No：4300
    • Date of Issue：2020/12/03 11:06
    • Brached FAQ

  • Maintenance for LC-40 (Pump) series (Video)

    Consumable Part No. 228-57501-92 Line Filter (LC-40D X3/XS, 40B X3) 228-35871-96 Line Filter (LC-40D/XR, 40B XR) 228-70796-42 Line Filter (LC-40D ... Show Detail

    • No：4340
    • Date of Issue：2020/12/03 13:55
    • Brached FAQ

  • Replacement of Plunger Seal (HPLC)

    Plunger seal parts number: Standard: 228-52711-93 Plunger seal UHP(with back up ring) Option: 228-52711-94 Plunger seal, back upring, GFP *The m... Show Detail

    • No：4413
    • Date of Issue：2020/12/04 16:01
    • Last Updated：2021/07/12 15:58
    • Brached FAQ

  • (HPLC) Replace of Mixer 0.5-2.6mL, 100uL line filter

    If the back pressure is more than 1MPa when the flowrate is 1mL/min and the mixer outlet is clogged. Remove the male nut and loosen the screw to replace th... Show Detail

    • No：4537
    • Date of Issue：2020/12/11 16:25

61-70 of Total 72

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