NDA 702

Functionality

The Dumas method involves combustion of the sample in the (CF) furnace at a temperature of over 1000 °C, producing elemental compounds. The NDA 702 provides for water separation in 2 steps.
The first with the physical DriStep™ trap strategically placed after combustion, and the second with a chemical trap that ensures complete water elimination.
Between the two traps, the gases produced pass through a reduction furnace (RF) where nitrogen oxidation compounds are converted into molecular nitrogen.
The_{CO2 is then capturedby} the unique self-regenerating absorbers (_CO2) and thus eliminated from the sample gas.

At this point, the molecular nitrogen is detected by the innovative TCD LoGas™ thermal conductivity detector, which sends the data to ^DumaSoftTM to calculate the amount of nitrogen and protein. The whole process takes only 4 minutes!

DUMASoft™ software

The NDA 702 is designed to offer maximum ease of use with the intuitive ^DUMASoftTM user interface, making it easy to choose between helium and argon.
There is a section in the main window where you can check the status of the device. Setting up analyses is easy.
The database and real-time graph are easily accessible and with the connection for the balance, preparing the analysis is even faster.
^DUMASoftTM includes an extensive library of preloaded methods, multilingual support and reporting capabilities with export to .csv files, LIMS and .xls files.
Create and manage calibration curves, name them and use the most appropriate curve. Manage the leak test and choose whether it should be performed for the entire circuit or just for one zone, e.g. after replacing a consumable.

The NDA 702 software can be extended with the optional 21 CFR Part 11 package for laboratories in the pharmaceutical, cosmetics and food industries that need to operate in compliance with the relevant FDA regulations.

Smart Lab solution

With the NDA 702, you can reduce routine work on your devices thanks to connectivity to VELP Ermes, as you can monitor your products in real time, anytime, anywhere.
An elemental analyzer designed for continuous operation with fully automated processes, VELP Ermes enables a drastic reduction in diagnostic times to ensure a high level of support with maximum data security and protection of your data.
Immediate notifications and alarms keep you informed about the status of your analysis, and remote interruption gives you total control over your processes, ensuring maximum safety.
Securely access your device’s database via the VELP Ermes platform and collaborate with your colleagues by creating and sharing reports from PCs, smartphones and tablets.

Elements

Nitrogen or protein is determined by conversion factors.

Key data

• Method of analysis: Determination of nitrogen using the Dumas method (combustion)
• Analysis time: 3-4 minutes
• Detector: TCD (Thermal Conductivity Detector)
• Weight of the sample: Up to 1 g
• Autosampler type: Electronic
• Capacity of the autosampler: Up to 4 disks, 30 positions each (up to 117 samples)
• Detection range N: 0.001 mg up to 200 mg abs. (or 100 %)
• Reproducibility (RSD): < 0.5 % for EDTA standards (9.57 % N)
• Recovery: > 99.5%
• Combustion temperature: 1100 °C
• Carrier gas: Helium or argon (grade 5.0)
• Combustion gas: Oxygen (grade 5.0)
• Connectivity: Ermes Cloud Platform via Wi-Fi or LAN, connected to a PC
• Interfaces: USB; RS232
• Weight: 54 kg
• Dimensions (WxHxD): 655x510x410 mm (H 690 mm with autosampler)
• Complies with 21 CFR Part 11: Yes, optional package available