Nitrogen / Protein Analyzer/ Kjeldahl system

  • Digesters
  • Distillation Units
  • Fume Exhaust Unit
 

Digesters

Dry block for Determination of Organic Nitrogen by the Kjeldahl method
 
Features:
  • Programmer, Time and temperature display.
  • Temperature selection from 45 to 450 °C.
  • Program memory: 20 programs of 4 steps.
  • RS-232 port for temperature register and digestion programation from a PC.
  • Maximum time per step: 600 minutes, K type temperature sensor.
  • An acoustic and indicator lamp show when the unit has reached the end of the final cycle.
  • Safety alarm operates if the temperature probe fails.
  • Minimal sample manipulation.
  • Uniform heating.
  • Gas collection system that does not require special water jet pumps.
 
Models:
COMPLETE UNIT MACRO (250 ml) COMPLETE UNIT MICRO (100ml)
Bloc Digest 6 (6 Tubes Capacity) Bloc Digest m 12 (12 Tubes Capacity)
Bloc Digest 12 (12 Tubes capacity) Bloc Digest m 24 (24 Tubes Capacity)
Bloc Digest 20 (20 Tubes capacity) Bloc Digest m 40 (40 Tubes Capacity)

 
“Auto-digest 20” for digestion in the organic nitrogen determination by the Kjeldahl method
 
Features:
  • Totally automatic digestion process with a lift and descend system of the sample holder rack
 
Models:
COMPLETE UNIT MACRO (250 ml)
Auto-digest 20 (20 Tubes capacity)

 

Distillation Units

Fully automatic steam distillation unit Kjeldahl “Pro-Nitro A” with inbuilt titration system
 
Features:
  • Steam distillation system Kjeldahl, complete with automated “ON-LINE” analysis (evaluation in real time).
  • For systematic precise analysis, with minimum personnel intervention, simple and safe. Adequate for a laboratory with a medium to large throughput of samples.
  • The Kjeldahl steam distillation unit «PRO-NITRO A» evaluates the distillate at the same time as it is produced.
         (Evaluation «On-Line»), the evaluation and distillation are completed as one operation, reducing drastically the analysis time.
  • The “On-Line evaluation” detects the point where the sample no longer produces Nitrogen, which means that, the distillation stops at the optimum maximum Nitrogen recovery and does not prolong the analysis longer than necessary.
  • The titration is a colorimetric method and is accepted by AOAC and does not require any periodic calibration.
  • Steam generator with safety thermostat, over temperature and over pressure device.
  • Universal adapter for MACRO (Ø 42 mm) and MICRO (Ø 26 mm) distillation tubes.
  • Space saving in the laboratory: the reservoirs for the H2O, NaOH, Boric Acid and HCl are located inside the unit.
  • Empties the digestion/distillation tubes and the collector automatically.
  • Automatic stop when distillation is complete.
  • Large LCD display of 16 x 4 characters.
  • RS232 output to results printer / COMPUTER.
  • Main system made from stainless steel with an ABS plastic front.
 
Specifications:
  • Measuring range: 0.1 to 200 mg Nitrogen.
  • Nitrogen recovery:> 99.5%
  • Detected nitrogen resolution: 0.0001
  • Reproducibility: Relative Standard deviation)< 1%
  • Distillation speed: from 35 to 45 ml/minute
  • Steam generator water consumption: 2 Litre/Hr.
  • Evaluation precision: 1.5%
  • Excellent precision on results.
  • Complete Nitrogen recovery from the sample.
  • Minimum operator intervention.
  • No calibration required.
  • Minimum analysis time
 
Results:

The results can be downloaded to a printer (Optional), required for GLP, and includes the following data:

  • Consecutive unrepeatable I.D. number of analysis.
  • Date and time.
  • Volume of NaOH.
  • Volume of Boric acid.
  • Reagent normality.
  • Nitrogen detected.
 
Storing Results On A Computer:
  • The PRO-NITRO «A» includes software to record results on the computer and allows batch reporting.
  • After each analysis the PRO-NITRO «A» sends, to the computer the results: Analysis number, date, time, HCl consumption (ml) and the nitrogen detected (mg).
 
Steam distillation unit Kjeldahl Semi-Automatic “Pro-Nitro S”
 
Features:
  • Steam distillation system. Compact steam generator with safety over temperature thermostat and over pressure device. Safety door, the system will not operate if the door is open.
  • Tube in place sensor: if the tube is not located, the dosing process of NaOH will not take place.
  • Universal adapter for digestion/distillation tubes MACRO (Ø 42mm) and MICRO (Ø 26 mm).
  • Small footprint, saves bench top space: The H2O, NaOH and H3BO3 reservoirs are placed within the unit.
  • Empty Digestion/Distillation tube system.
  • Stainless steel case with reinforced ABS plastic front.
  • Green LED 2 digit display.
  • Distillation program: (Add NaOH, Add Boric Acid, Distillation time, Empty tube.)
  • Automatic distillate titration kit. (See accessories).
 
Specifications:
  • Measuring range: from 0.2 to 200 mg Nitrogen.
  • Programmable distillation time.
  • Nitrogen recovery >99.4%
  • Distillation speed : from 35-40ml/minute
  • Typical distillation time: from 7-10 minutes.
  • Water consumption rate: from 80-100 litres/Hr.
  • Steam generator water consumption: 2 Litres/ Hr.
 
Steam distillation unit Kjeldahl “Pro-Nitro M” Basic
 
Features:
  • Steam distillation system. Compact steam generator with safety over temperature thermostat and over pressure device. Safety door, the system will not operate if the door is open.
  • Tube in place sensor: if the tube is not located, the dosing process of NaOH will not take place.
  • Universal adapter for digestion/distillation tubes MACRO (Ø 42mm) and MICRO (Ø 26 mm).
  • Small footprint, saves bench top space: The H2O and NaOH reservoirs are placed within the unit.
  • Stainless steel case with reinforced ABS plastic front.
  • Green LED 2 digit display.
  • Automatic distillate titration kit. (See accessories).
 
Specifications:
  • Measuring range: from 0.2 to 200 mg Nitrogen.
  • Programmable distillation time.
  • Nitrogen recovery >99.4%
  • Distillation speed : from 35-40ml/minute
  • Typical distillation time: from 7-10 minutes.
  • Water consumption rate: from 80-100 litres/Hr.
  • Steam generator water consumption: 2 Litres/ Hr.
  • Water reservoir for steam generator: 6 litres
  • NaOH reservoir: 2 Litres.
 

Fume Exhaust Unit

Fume Exhaust Unit
 
Features:

Specially designed to absorb and neutralize vapours generated in the Kjedahl digestion processes. System composed of a “Scrubber unit” that blocks the passage and neutralizes the condensed acids, and a re-circulating water pump that produces sufficient vacuum to aspirate the vapours.