Kjeldahl Distillation Unit, K9840 series



Automatic accurate distribute alkali and boric acid solution.

Perfect safety protection system gives distiller and tubes measurement and protection against over temperature and over pressure.
Calibration Function: Dilution water calibration, Alkali solution calibration, Boric acid solution calibration, Washing flow calibration.
Safety door, Digestion tube and cooling water condition is displayed at real time when running.


K9840 Auto Distiller adopts globally accepted Kjeldahl nitrogen determination method to determine nitrogen content of sample.  All intelligent software design makes the sample distillation complete within minutes. The distillation and condensation automatic cleaning system makes the measurement precision further improved.
It is widely used in food processing, feed production, tobacco, livestock, soil fertility, environmental monitoring, medicine, agriculture, scientific research, teaching, quality control and other fields for the test of nitrogen or protein content, can also be used for the test of ammonium, volatile fatty acid/alkali, and so on.


·Display: 4.3 inch color screen.
·Manual/Automatic mode changeover free.
·Automatic Alkali pipeline washing function.
·Automatic or manual filling mode is optional according to test need.
·Distillation time can be edited freely, and automatic alarming upon completion.
·Automatic cleaning of control system and distiller, ensuring high measurement accuracy.
·Intelligent design of nitrogen tube peripheral facilities including safety designs and displacement hint.
·Intelligent cooling water control system achieves cooling water control and test.
·Emergency stop operation is able to deal with unexpected accidents.
·Automatic fault detection and intelligent audible and visual alarm system are available.
·Calibration Function: Dilution water calibration, Alkali solution calibration,
·Boric acid solution calibration, washing flow calibration.
·Safety door, digestion tube and cooling water condition is displayed at real time when running.
·Testing model is built in, for detect most functions condition.


Technical data:

Measuring range 0.1mg ~240mg N
Recovery ≧99.5%
Sample capacity solid≦6g/sample, liquid≦16mL/sample
Distillation speed 3-6min/sample
Cooling water consumption 1.5L/min
Operating mode Manual/automatic mode
Display modes 4.3″ LCD screen
Power supply 220VAC±10%, 50Hz
Power 1.3KW
Net weight 30Kg
Dimensions 400mm×385mm×735mm


K1100F series Automatic Kjeldahl Analyzer

Automatic kjeldahl analyzer, K1100F series



1.High accuracy dozing and working: adopt 4 KNF pumps work for dozing, measurement liquid volume.
2. Complete compatible design: Using 300mL tubes(φ42mm), compatible with con-generic products perfectly
3. Easy Maintenance: Pre-install full functions of cleaning, include Digestion tube cleaning, Receiving cup cleaning, Alkali pipeline cleaning, Boric  acid  pipeline  cleaning,  Acid  washing,  Steam  bottle  evacuation. Support customer make the routine maintenance easily.


K1100F Automatic 

Kjeldahl Analyzer is an automatic device integrating distillation and titration functions designed based on classic Kjeldahl nitrogen determination method. It’s equipped with the latest core control system, powerful automation and high-quality components, can easily achieve automatic waste discharge and cleaning of digestion tubes and titration cups, control steam supply and real-time detection of condensation temperature. High-accuracy charging pump and titration system ensure test results accuracy, and multiple fluid level detection gives smooth test process.

Complete microcomputer control
Automatic completion of distillation, titration,calculation, printing, waste discharge and multiple protections, i.e.failure self-detection,hints of condensed water shortage, displacement of safety door and digestion tube and so on.

Large LCD Touch Screen Panel
Large LCD touch screen gives visual operation and abundant information,enabling user to have a good command of it.

Complete compatible design
Compatible with congeneric products perfectly

Performance advantage

Compatible with φ42 digestion tube
Titration while distillation, enhance the efficiency rapidly.
User friendly design, color touch screen, easy for operating
Faster ARM system, faster operating rate
Digester model SH220F and SH420F is matching K1100F, with φ42 digestion tube


·Automatic distillation, titration, calculation, printing, drain and cleaning function, safety and saving-time.
·Visibletitration cup design gives operatorreal-time control of the whole test process.
·Steam flow is controllable, satisfying differenttest requirements.
·Regent barrel enjoys fluid absence warning function,ensuring smooth test going.
·High-precision charging pump and titration system ensure test results accuracy.
·Large LCD touch screen gives visual operationand abundant information,enabling user to have a good commandof it.
·USB or RS485 interface is optional for PC connection.
·Distilled liquid temperature is detected real time. Emergency stop against temp anomaly.
·Double distillation modelmeets different experiments, to retard the speed of acid-base reaction.
·Digestion tube fast drain function is used to avoid operator touch distilled hot reagents, protecting operators.
·Printer is built in.


Measuring range 0.1mg ~200mg N
Analysis time 5~10min/sample
Reproducibility Average value relative error ±0.5%
Recovery ≧99.5%
Burette volume 1.0μL/step
Sample capacity solid≦5g/sample, liquid≦20mL/sample
Water consumption in the distillation process 1.5L/min
Data storage capacity 1800 groups
Power supply 220VAC±10%, 50Hz
Power 2Kw
Net weight 38Kg
Dimensions 455mm×391mm×730mm