Velp NDA 701

NDA 701 is a powerful Dumas Nitrogen Analyzer, able to hold up to 4 discs, 30 positions each. Performing precise analysis in a flash, it is the best solution for high productivity and offers unique benefits, being totally unsupervised. This means that the NDA does not need to be controlled during its work and is able to process samples 24/7. Also under the environmental aspect it is a great solution: minimum wastes and residues are produced and the life of consumables is optimized by the software (remaining customizable for any need). Saving on consumables means saving money: with a consciousness lab managing, the cost per analysis will be incredibly low. NDA 701 is entirely controlled via PC through the intuitive DUMASoft™ Software. The several pre-installed methods and the numerous calibration curves that can be stored, increase the efficiency of the instrument. The software accepts weight values directly from the balance. Data management appears clear and detailed, thanks to the final reports and the graph. The analyses can be recalled by a database and can be saved in different format (according to LIMS) on the PC, exported as test reports or printed.
NDA 701 offers a very low detection limit (0.003 mg N) and a good RSD% (<0.5% with EDTA standard).
All in compliance with GLP (Good Laboratory Practice). Moreover the NDA 701 incorporates TEMS™ technology for major savings in Time, Energy, Money and Space, pursuing VELP's contribution to environmental


General Features
Method of analysis:

Power supply:
Dimensions (WxHxD):

Duration of analysis:
Sample weight:
Autosampler capacity:
Reproducibility (RSD):
Detection limit:

Gas Features
Helium (He):
Oxygen (O2):
Compressed air or Nitrogen (N2):
Helium (He) pressure:
Oxygen (O2) pressure:
Compressed air or Nitrogen (N2) pressure:

Supplied With
• Start-up kit
• Autosampler with disc 1
• DUMASoft™ NDA 701 Software

Optional Accessories
• 1000 analyses kit for NDA 701
• Disc 2 for autosampler
• Disc 3 for autosampler
• Disc 4 for autosampler
• Chromosorb 10g
• Quartz wool, 50 g
• Reduced copper, 250g
• Copper oxide, 50g

Nitrogen determination according to Dumas method (combustion)
USB; RS232
1400 W
230 V / 50 - 60 Hz
54 kg / 119 lb
655x510x410 mm (H 690 mm with autosampler) 25.8x20.1x16.1 in (H 27.0 in with autosampler)

3/4 minutes

Innovative TCD autocalibrating
Max 1g
Up to 4 discs, 30 positions each
< 0.5% for EDTA standards (9.57%N)
> 99.5%
0.003 mg nitrogen

Purity 99.999% (grade 5.0)
Purity 99.999% (grade 5.0)
Purity 99.6 % (oil and water free)
3 bar
3 bar
4 bar

• USB cable for PC, 5m
• RS232 cable for balance

• VLT catalyst, 25g
• VHT catalyst, 50g
• Sicapent, 100 g
• EDTA, 100 g
• Tin Foil Cups, 100pcs
• Quartz reactor tube
• Ash collector
• Tin foil cup closing device