VELP Scientifica - Dumas Nitrogen Analyzer - NDA 701

Manufactured by  VELP Scientifica
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A powerful Dumas Protein/Nitrogen Analyzer, able to perform precise nitrogen analysis and protein determination in a flash.

A powerful Dumas Protein/Nitrogen Analyzer, able to perform precise nitrogen analysis and protein determination in a flash. It is the best solution for high productivity and offers unique benefits, being totally unsupervised.
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Features of Dumas Nitrogen Analyzer - NDA 701

Exceptional Versatility  Preinstalled methods selectable in an instant  Controllable from PC with DUMAsoft™ software  Powerful, clear and detailed reporting software  Data storable in multiple formats for LIMS or PC 

High Productivity  Flash determination of nitrogen & protein content  Automated analysis of preloaded samples (117 positions)  Totally unsupervised operation  Results produced 24/7/365 

High Performance  Unmatched LOD, 0.003 mg N  RSD less than 0.5% with EDTA standard  Conforms to Good Laboratory Practice standard  Leak tests (zone or total) ensure optimum performance 

Economical Operation  LoGas™ TCD with no reference gas required  Exceptionally low cost per analysis  Premium quality consumables  Low energy consumption  Lowest operator costs 

Environmentally Friendly  Minimum possible waste & residues  Optimized life of consumables  Incorporates TEMS™ technology* 

Dumas Nitrogen Analyzer - Full Automation & Convenience 

VELP Scientifica has designed convenience into the NDA 701 Dumas Nitrogen Analyzer to let the user concentrate on evaluating the results that are produced in just 3 to 4 minutes per sample.  Once up to 4 discs (30 positions each) have been loaded, press the start button and walk away.  With the best limit of detection on the market and an RSD lower than 0.5% for EDTA, the user is assured of high precision results. 

NDA 701, the ideal solution for high throughput, being fully automated and able to run 24/7. 

Dumas Nitrogen Analyzer - NDA 701 Working Process 

The Dumas method starts with a combustion to burn the sample, obtaining elemental compounds. Water is removed by a first physical trap (DriStep™), positioned after the combustion, and a second chemical one. Between the two, the elemental substances passed through a reduction furnace. The auto-regenerative CO2 adsorbers let pass only the elemental nitrogen that is detected by the LoGas™ innovative Thermal Conductivity Detector (TCD) with no requirement for a reference gas. 

Dumas Nitrogen Analyzer - DUMASoft™, Simple Data Management 

All the information will be constantly monitored from the main screen, including the real time graph. A wide library of methods is pre-installed to support the user with valuable information on the analysis.  It's also possible to create a library of the calibration curves, in order to be always ready to use the most suitable one. 

At any time, a leak test can be performed, to check that the system is completely sealed and no gases comes out.  After the analysis, the user can create customized test report, with lots of information about the lab and its own logo.

General Specifications

There are no General Specifications available.

Additional Specifications

Method of analysis: Nitrogen determination according to Dumas method (combustion) 
Duration of analysis: 3/4 minutes 
Detector: Innovative TCD autocalibrating 
Sample weight: max 1g 
Autosampler capacity: up to 4 discs, 30 positions each 
Reproducibility (RSD): 99.5% 
Detection limit: 0.003 mg nitrogen 
Helium (He): purity 99.999% (grade 5.0) 
Oxygen (O2): purity 99.999% (grade 5.0) 
Compressed air or Nitrogen (N2): purity 99.6 % (oil and water free) 
Helium (He) pressure: 2 bar 
Oxygen (O2) pressure: 2 bar 
Interfaces: USB; RS232 
Power: 1400 W 
Power supply: 230 V / 50 - 60 Hz 
Weight: 54 kg / 119 lb 
Dimensions (WxHxD): 655x510x410 mm (H 690 mm with autosampler) 
25.8x20.1x16.1 in (H 27.0 in with autosampler)

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