Dumas Nitrogen Analyzer
Equip Your Lab for Success
Contact Us for a Wide Range of Analytical Instruments and Equipment!”
NDA 702 Nitrogen Analyzer
The NDA 702 combustion elemental analyzer is a versatile, cloud-enabled and fully automated solution for nitrogen determination according to Dumas Method in a wide range of applications. The NDA 702 offers high performance on both solid and liquid samples, working in accordance to international standards such as AOAC, AACC, ASBC, ISO, IFFO, OIV.
Key Features
-
FAST ANALYSIS
The fully automatic NDA 702 elemental analyzer perform analysis in 3-5 minutes. The quick start and sleeping mode ensure fast operation set up with possibility of leak test per zone. -
THE HIGHEST PRECISION
The LoGas™ TCD (Thermal Conductivity Detector) designed by VELP guarantees unmatched precision with the unrivaled LOD of 0,001 mgN and low standard deviation. -
MAXIMUM SAFETY
MAXIMUM SAFETY. -
EFFICIENCY
The fully automatic and reliable combustion method of the NDA 702 together with DriStep™ water trap guarantee moderate cost. The 30-positions disc autosampler expandable with extra 3 discs ensures maximum productivity and uptime. -
VERSATILITY
NDA 702 works with solid, liquid and doughy samples of up to 1 gram. Seamless carrier gas selection between Helium and Argon without hardware changes and whit no memory effect -
SMART INSTRUMENT
The NDA 702 N/protein analyzer is easy to use and does not require skilled operator. The user-friendly DUMASoft™ software and VELP Ermes connection will deliver a new user experience and smart workflows.
DUMAS VS KJELDAHL
DUMAS
NDIR - NON DISPERSIVE INFRARED DETECTOR
-
DUMAS KJELDAHL
Non-stop performance -
TIME SAVING
Few minutes required -
LOW COST OF OWNERSHIP
Moderate running costs -
TOTALLY UNSUPERVISED
Fully automated process -
DRY CHEMISTRY
No dangerous chemicals -
ECO-FRIENDLY
Less residues and no wastes produced -
OFFICIALLY RECOGNIZED METHOD
Gaining in international use with advanced instruments
KJELDAHL
TCD – THERMAL CONDUCTIVITY DETECTOR
-
LESS PRODUCTIVITY
nability to operate continuously -
TIME-CONSUMING
Analyses last hours - AFFORDABLE EQUIPMENT COST
-
PARTLY UNSUPERVISED
Not entirely automated process -
WET CHEMISTRY
Uses chemicals -
COSTLY WASTES PRODUCED
Residues must be disposed off -
WORLDWIDE OFFICIAL METHOD
Traditional technique, simple equipment
NDA 702 Analysis Process
-
CF
(Combustion Reactor) Allows complete combustion at 1030 °C in order to convert all of the sample into its elemental substances. -
WT1
(Physical Water Trap) The maintenance-free DriStep™ cooler permits 99% of water to be removed. -
RF
(Reduction Reactor) Enables the elimination of unwanted compounds and oxygen, transforming NOx into N₂. -
WT2
(Chemical Water Trap) Eliminates the residual water. -
CO₂
(CO₂ Regenerating Adsorbers) Used to get rid of all the CO₂. Auto-regenerating, maintenance-free system. -
TCD
(Innovative TCD) LoGas™ determines nitrogen content without the need for a reference gas. Maintenance-fre
Technical Data
| NDA 702 | |
|---|---|
| METHOD OF ANALYSIS | Dumas method / Combustion |
| DETECTOR | Autocalibrating TCD (no need for a reference gas) |
| CARRIER GAS | Helium or Argon |
| SAMPLE WEIGHT | Up to 1 g |
| MEASURING RANGE | ppm – 200 mgN |
| ANALISIS TIME | 3-5 min |
| AUTOSAMPLER CAPACITY | Up to 4 discs, 30 positions each |
| AUTOSAMPLER TYPE | Pneumatic |
| REPRODUCIBILITY (RSD) | < 0.5% for EDTA standards approx. 100 mg (9.57% N) |
| RECOVERY | > 99.5% |
| DETECTION LIMIT | 0.001 mg N (He) or 0.01 mg N (Ar) |
| COMBUSTION TEMPERATURE | 1030 °C / 1886 °F |
| HELIUM (He) / ARGON (Ar) | Purity 99.999% (grade 5.0) |
| OXYGEN (O₂) | Purity 99.999% (grade 5.0) |
| CARRIER GAS PRESSURE | 2 bar |
| OXYGEN (O₂) PRESSURE | 2 bar |
| CONNECTIVITY | Cloud via LAN or Wi-Fi |
| INTERFACES | USB, RS232, VELP Ermes Cloud Platform |
| POWER | 1400 W |
| POWER SUPPLY | 230 V / 50 – 60 Hz |
| WEIGHT | 54 kg 119 lb |
| DIMENSIONS (WxHxD) (including autosampler) | 655 x 690 x 410 mm 25.8 x 27.2 x 16.1 in |