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400-0823518
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onductivity cell problems and solutions [ 2017-03-03]Phenomenon: Baseline is unstable and noise is large Possible reasons: (1) the inside of the conductivity cell is not smooth and burr. (2) after the conductivity of the metal part of the metal and the host circuit poor contact. Solution: (1) to remove the burr needle. (2) with solder wire click on the metal part of the conductive plate. ... More+ |
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Determination of Hexavalent Chromium in Drinking Water and S [ 2017-03-03]Chromium is a kind of natural metal elements, mainly in trivalent and hexavalent two forms exist, of which hexavalent chromium easily through the cell membrane is absorbed by the body, the human body lung, liver, kidney and other organs damage, concentration Large can lead to death [1,2]. The establishment of a method for the determination of hexavalent chromium in drinking water and surface water... More+ |
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How to do quality control [ 2017-03-03]How to do quality control sample: 1, running about 20min, the current is set to 40-50mA, 2, the output voltage down to -50 below and the value is not a big change when the click output zero 3, with deionized water to clean the syringe and needle 3 times, and then absorb about 2ml deionized water, injection analysis 4, when the baseline to maintain the level, (full screen range of 100) that the mac... More+ |
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Suppressor daily maintenance and maintenance [ 2017-03-03](1) the operation process to be standardized After starting the pump, be sure to observe the waste liquid out of the waste liquid, be sure to wait about 30min after the current, be sure to finish the sample after the current transferred to 0. Long time useless, the first flow rate adjusted to 0.3ml / min, half an hour after the flow rate to the normal flow rate of the column. (2) to ensure that th... More+ |
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Ion column daily maintenance and maintenance [ 2017-03-03]1, the column should be stored in the eluent to save, save the temperature 4-10 degrees Celsius, the use of temperature 20-60 degrees Celsius. 2, domestic NJ-SA-4A column should be used in the range of pH2-12, eluent and sample concentration can not exceed this range. The imported Shodex IC column should be used in the pH 3-12 range, and the eluent and sample concentration should not be outside th... More+ |
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Ion chromatographic operation flow [ 2017-03-03]1, the preparation of fresh eluent Prepare the eluent with the appropriate concentration according to the column The deionized water of the eluent should be degassed Bubble into the pump affects the stability of the pump, the baseline discount Bubble enters the detector to influence the determination of the sample 2, boot sequence Open the host Open pump Open the workstation, point the control pan... More+ |
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Preparation of cations and cations [ 2017-03-03]respected user: Hello! When you sign a contract with us, you become our users. Please prepare the company before the arrival of the technical staff to do the following preparatory work, ready to "on the preparation of the receipt" back to my company, our company will be based on "receipt" content, as soon as possible arrangements for technical staff debugging. 1. Proficiency in computer basic know... More+ |
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Anions and cations (voltammetry) are ready for work [ 2017-03-03]respected user: Hello! When you sign a contract with us, you become our users. Please prepare the company before the arrival of the technical staff to do the following preparatory work, ready to "on the preparation of the receipt" back to my company, our company will be based on "receipt" content, as soon as possible arrangements for technical staff debugging. 1. Proficiency in computer basic know... More+ |
Qingdao Puren Instrument Co., Ltd
TEL：400-0823518
E-MAIL：prl@qdpr.com
FAX：0532-87622298
ADD：No. 23 Siliu North Road ,Licang District
WEB：http://www.qdpr.com
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