Fully automatic Kjeldahl nitrogen analyzer (with automatic sampler)

KD-625Type fully automatic Kjeldahl nitrogen analyzer (with automatic sampler)

●Unmanned fully automatic operation

●Complete system: Automatic sampler integrating distillation and titration systems

●Pre titration technology protected by patents, relative deviation0.75%within

KD-625isKD-310The latest fully automatic Kjeldahl nitrogen analyzer with automatic sampler developed on the basis of, equipped with distillation, titration system, and automatic samplerKD-625The design is based on the Kjeldahl method for accurate determination of nitrogen and protein in the food and feed industry, environmental control (phenol, water nitrogen, sludge, soil, and lubricants), chemical and pharmaceutical industries after sample digestion; Equipped with an automatic samplerKD-625Provides complete automation: loadable25 onlyx250The milliliter sample tube will provide accurate and reliable results without human supervision;20Directly load the sample holder into the automatic sampler without transferring the digestive tube; The three-dimensional motion automatically extracts sample tubes and directly sends them to the automatic nitrogen analyzer for further analysis; The latest wireless radar sensors and weight sensors are used to monitor the sample loading process and sealing strength of the distillation tube, ensuring that the sample will not leak during the distillation process and that the sealing of each distillation tube is consistent. At the same time, the corrosion and interference of distillation waste liquid on traditional photoelectric sensors are avoided.

KD-625The design of distillation and titration systems is designed to meet the most demanding laboratory requirements for high efficiency and safety standards, combining distillation and titration devices in a fully automated and integrated system.OpsisThe unique design and patents are applied to it: a highly corrosion-resistant shell design, patented pre titration technology,1.95The titration accuracy of microliters and50The milliliter burette ensures accurate nitrogen analysis; High precision reagent pump and titrator ensure accurate addition of reagents and titration volume measurement, built-in2Raise the standard titration acid reagent tank,Adopting positive pressure mode, located at the upper part of the titration system, to avoid the generation of bubbles, and automatically venting bubbles after each acid absorption.

pass7The analysis method can be edited on an inch color touch screen, with a Chinese and English operating interface. The operator can set the amount of sodium hydroxide, water, and boric acid added, and select reaction delay time, equilibrium stirring time, distillation time, and adjust steam output（10%To100%Strength; Simultaneously, automatically control the size of condensed water based on the temperature of the effluent; Multiple sequence distillation can be switched freely, and other sample weights can also be input during the analysis process, greatly improving efficiency;20Multiple units of results are available for selection; A multi-level password system is used to manage the analysis menu, parameter modification menu, advanced menu, and maintenance menu, strictly in compliance withGMPThe requirements.

AOACThe recommended method for determining the endpoint color is to use an ultra high precision color detector to detect real-time changes in the three primary colors, combined with pre titration technology1.95The titration accuracy, blank value, and repeatability of microliters are very stable, with a relative error of0.75%Within; During the distillation process, automatic titration is performed simultaneously, with each sample undergoing distillation titration3Complete within minutes; You can choose the outflow volume+The analysis method for color endpoint can also choose distillation time+The analysis method of color endpoint; At the same time, it has the function of automatic cleaning of the titration cell, ensuring the cleanliness of the titration cell after all samples are analyzed.

Multi tasking software allows operators to set all parameters and fully automate the distillation and titration processes; The distillation and titration system provides real-time reports, displaying analysis time, titration volume, and detection results in real time. It has powerful data processing and storage functions, and uses a universalEXCELThe format is communicated externally through wireless network: balance data input, sample weight and sample number are transmitted to the instrument, and analysis results and reports are output toPCComputerApplemobile phone.

Powerful various security protection and monitoring functions: distilled waterNaOH、Boric acid level sensor, waste liquid sensor, standard titration acid level sensor, instrument level sensor, safety door closing sensor, maintenance door closing sensor, test tube positioning and replacement sensor, steam generator high and low level sensor, over temperature and over pressure protection sensor, distillation effluent temperature monitoring sensor, titration tank boric acid level, titration endpoint level, overflow level sensor.

Technical Specifications

● rate of recovery:≥99.5%

● Accuracy:≤±0.75%

● Detection limit:≥0.1mg N

● 滴定精度：1.95microliter

● Data storage: unlimited saving of results

● Built in steam generator and titration system

● Steam volume range:10-100%

● Equilibrium distillation time:0100second

● Delay distillation time:0-30minute

● Automatic water dilution, alkali addition, boric acid addition, distillation, titration and calculation, programmable control

● Automatic titration: compliantAOACStandard color endpoint judgment method

● Automatic waste disposal: digestive tract waste, receiving cup titration waste, automatic cleaning of receiving cup

● Four liquid level sensors, automatic alarm for alkali, water, and boric acid deficiency, alarm for full waste liquid tank

● Automatic sampler: standard configuration25Distillation tube, optional65Position or400mlDistillation tube.

● Digestive load sample:20The digestive tube rack can be directly loaded into the automatic injection without transferring the digestive tube.

● Distillation injection: The distillation tube moves in a horizontal and vertical three-dimensional direction to ensure the balance of the injector.

● Emergency analysis:5The distillation tube is used for cleaning, blank, and temporary emergency analysis of samples.

● Injector safety: automatic injection safety door sensor, digestive tube rack position sensor, 3D motion direction sensor.

● Power:2300W

● Size:930*1610*730mm

● Weight:115kg