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400-0823518
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Several Methods of Pretreatment of Ion Chromatography [ 2017-03-03]Abstract: Several methods of pretreatment of ion chromatographic samples were reviewed, including membrane treatment, solid phase extraction, decomposition, electrodialysis Key words: ion chromatographic sample pretreatment review With the continuous development of ion chromatography technology, its application is also expanding; the same time, with the type and morphology of the sample to be meas... More+ |
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Single potential voltammetry in the use of some basic proble [ 2017-03-03]No peak Solution: (1) Whether the volt-ampere key is pressed (2) Sampling mode is selected 2 (3) Whether the sample is in (4) Is the pump out of normal (5) Is the electrode wiring correct (6) Is there any bubble in the chemical pool 2. Baseline noise is large Solution: (1) Replace the saturated KCl solution in the reference electrode (2) Clean the inner wall of the voltammetry pool (3) Grasp the s... More+ |
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Host failures and workarounds [ 2017-03-03]1, the phenomenon: plug in the host power cord, playing the main power switch, LCD no response. Possible reasons: (1) the power cord is broken (2) the internal fuse is broken Solution: (1) replace the power cord (2) replace the fuse 2. Phenomenon: open the host power, the LCD screen only shows a blue background, there is no number and text display. Possible cause: The internal background color kno... More+ |
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The entire flow problem and the solution [ 2017-03-03]Common problems in the flow path are water leakage. If the water leakage, first stop the work of the advection pump, and then one by one to exclude leakage of the place. The main place where there is a leak is: 1 advection pump inlet, due to not tight or pressure is too high lead 2 The connection between the conductivity cell and the suppressor is due to the poor sealing of the flanging ... More+ |
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Suppressor problems and solutions [ 2017-03-03]Phenomenon: the flow path is connected with the suppression of current, the waste tube is not a continuous bubble discharge. Possible cause: 1 Supporter positive and negative power cord is not connected. 2 suppressor internal aging, inhibition capacity decline. Remedy: 1 Connect the suppressor electrode correctly or increase the suppression current 2 It is recommended to replace the suppressor ... More+ |
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Column problems and solutions [ 2017-03-03]First, the phenomenon: the spectrum, the ion peak is very close, the separation is low, the lack of spectrum in the sample contains ions and peak peak time shorter. Possible cause: aging of the separation column results in a decrease in column efficiency. Solution: 1 adjust the eluent proportion and concentration, and appropriate to reduce the flow rate 2 change the separation column Second, the p... More+ |
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Pole pump failure and solution [ 2017-03-03]Plane diagram of advection pump 1 - pump inlet connector, connected to the inlet and pump head 2 - check valve, a total of two, the liquid can only be a one-way through, pay attention to the installation direction, with arrows indicating flow direction 3 - one-way valve seat, a total of two, for the installation of one-way valve 4 - U-shaped tube for connecting the main pump head to the auxiliary ... More+ |
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Six - way valve failure and solution [ 2017-03-03]1. Phenomenon: connected to the six-way valve after the pump interface pressure display Possible cause: The six-way valve is blocked or the inlet is not in the injection position Solution: Clean the six-way valve line and pull the inlet to the injection position 2. Phenomenon: the valve wrench from the injection to the analysis, the workstation does not automatically start collecting Possible reas... More+ |
Qingdao Puren Instrument Co., Ltd
TEL：400-0823518
E-MAIL：prl@qdpr.com
FAX：0532-87622298
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