The working principle of JK9870A auto Kjeldahl analyzer is based on the classical methods, it's namely the "color method" developed auto Kjeldahl analysis system. It is consistent with national and international standards and methods of Kjeldahl nitrogen. The JK9870B is a kind of instrument which is able to achieve comprehensive network management, and completely under control and utilization of computerization. Its "Management Center System" is a very effective way of reaching all related information over internet, through which enterprises' "lab center" and government's "intelligent control center" is able to make its work more efficient and convenient. Specifications Name of Item JK9870B Range of Analysis 0.1—200 mg N Repeatability (RSD) ≤1%(30mgN,0.1mol/L H+) Accuracy of Titration 1μL/Step Recovery ≥99.5% Sample analysis time (cooling water temperature 18 c) 4-6min Cooling water flow switch Yes The cumulative flow of cooling water Yes Modes of operation Auto Analysis/ Manual Analysis calibration method of Titrant concentration Manual Input/Auto Calibration Digestive waste automatic discharge Yes Samples of distilled liquid temperature test Yes Titration curve display Yes Alkali pipe cleaning Yes Temperature sensor Yes Pressure sensor Yes Intelligent cooling system interface Yes Computer control software interface Yes Ethernet port Yes USB interface Yes Heating power 2000W The determination of sample weight Solid≤6g; liquid≤20ml

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