YB-K9830A Automatic Kjeldahl Nitrogen Analyzer

YBOTECH YB-K9830A Automatic Kjeldahl nitrogen analyzer is a nitrogen element analysis system developed based on the classic Kjeldahl method for automatic distillation and color method to determine the end point. The method conforms to relevant domestic and international standards.

Main Feature
  • YB-K9830, YB-K9870 are 7-inch color touch screen, YB-K9830A is 10-inch color touch screen, both are Chinese and English operating systems
  • Level 3 authority management and system parameter query comply with relevant certification requirements
  • The operating system automatically shuts down after 60 minutes of unattended operation, saving energy, safety, and peace of mind
  • Operation methods, reagent preparation, precautions, maintenance are placed on the screen for easy access by users
  • Built-in “Protein Coefficient Lookup Table” for users to access, query and participate in system calculation
  • The data storage capacity reaches 140,000 pieces, which can be queried and printed
  • The function of adding alkali again during operation avoids analysis error or sample rejection caused by insufficient alkali amount
  • Absence protection of the digestive tube can prevent the system from adding reagents and heating and hurting people when the digestive tube is not placed
  • Safety door protection settings ensure the personal safety of operators
  • The water shortage protection of the steam system can make the system automatically shut down and alarm when there is water shortage to prevent accidents.
  • The steam boiler over-temperature protection system can prevent the failure of the distillation system from causing the temperature in the steam boiler to be too high to damage the instrument
  • The safe alkali addition mode can reduce the strong neutralization reaction in the alkali addition process and prevent the occurrence of pipe bursting.
  • The optical path system of YB-K9870 product adopts R, G, B three-color light source and corresponding three-color color sensor, with good stability and high resolution
  • The titration system adopts a plunger titration pump composed of an imported plunger needle tube and a linear guide rail, with high precision and long life.
Test principle

Distillation and titration analysis can be performed after the sample is digested and cooled to room temperature. The process principle is as follows: (NH4)2SO4+2NaOH= Na2SO4+2H2O+2NH3↑

That is, the effective sample “ammonia” is separated with high temperature steam under alkaline conditions → collected in a titration cup containing boric acid absorption solution → titrated with acid titration and analyzed to obtain the results.

Technical Specification
Item No. YB-K9830 YB-K9830A YB-K9870
Analysis scope 0.1~240 mg N
Precision (RSD) ≤0.5%
Recovery rate % 99~101%
Minimum titration volume/step None None 0.75μL/step
Dosing Pump Accuracy Verification None None 8ml / ±5‰
Titration beaker capacity None None 300mL
Titration speed None None 0.13ml/sec—0.7ml/sec, 6 gears ad justable
Titrant concentration input
method
Manual input/Automatic calibration of the instrument
Analysis mode Standard/Drip while steaming
Distillation time 0~900 seconds adjustable 0~900 seconds adjustable 10 seconds~900 seconds (10 seconds per gear continuosly adjustable
Auto shutdown time No operation for 60 minutes
Steam flow regulation None 40%~100% None
Digestive effluent discharge None Waste liquid automatic discharge None
Alkali pipeline automatic cleaning None automatic cleaning None
Recipe management 99 groups
Communication Interface Refrigeration Circulator Interface
Data storage 140,000 sets of data
Printer None 57CM thermal automatic paper cutter printer
Display 7 inches 10 inches 7 inches
Steam boiler over temperature
alarm
120
Distillation sample temperature
monitoring alarm
None 50 None
Steam pressure monitoring
alarm
None 40kpa None
Cooling water flow alarm None Yes None
Leakage protection switch Yes
Safety door switch Yes
Test tube out of position switch Yes
Steam boiler anti-dry burning
device
Yes
Operating Voltage AC220V/50Hz
Heating power 2000W
External dimensions 500*460*710mm
Net weight (Kg) 24 30 36

Related suggestion

Request for quotation

Name *
Fill out this field
E-mail *
Please enter a valid email address.
Phone *
Fill out this field
Country
Fill out this field
Company name
Fill out this field
Leave a message *
Fill out this field