Dumas Nitrogen Protein Analyzer F0200

The Dumas Nitrogen Protein Analyzer determines the nitrogen/protein content of samples through combustion, purification, reduction, and thermal detectivity detection. Its efficiently analyzes a single sample in 4 minutes without pretreatment and reacts in a nontoxic and harmless way ensure safety and environmental friendliness.

Sampling system

The 1-disc 120-positions autosampler can conduct a direct analysis of a large sample size. The pneumatic components can inject for 100,000 times with low maintenance cost. Users can add samples freely during preparation (either solid or liquid) to enhance experimental efficiency without stopping the automatic analysis. The contactless in-situ detection function provide by anti-interference infrared modules can interrupt self-test and pop-up messages to avoid maloperation if the sampling disc is occupied.

Combustion Furnace system

High temperature, pure oxygen, and the 2-stage combustion process ensure thorough oxidation and digestion. An efficient metal condenser and 2-stage desiccant can remove water completely. The desiccants can be reused for 2000 times. New consumables can reduce nitrogen oxide, absorb excess oxygen, and prolong the service life. Both combustion and reduction tubes can be reused for 1000 times. The thermal conductivity detector (TCD) can determine the nitrogen produced by reduction.

Pneumatic System

A 2-stage regulator eliminates the impact of external pressure fluctuations and combustion-induced pressure changes on the detector system to ensure stability.

PTFE fittings and SMC quick couplers allow for clear observation of contaminants and toolless maintenance.

The combustion tube and joint of an original pneumatic connector support easy assembly and disassembly to eliminate air leakage caused by irreversible wear of ferrule compression fittings.

Software Function

PC software improves operation efficiency. Click to configure parameters and conditions, and control the process, gather, store, and print out data reports.

--Wireless communication of balance data: an industrial wireless communication module automatically collects weigh data, with max distance 100m. The data display window and voice authentication function can adjust (verify) value.

--air leakage inspection: the gas path can be checked automatically or manually for the convenience of users.

--Custom lab report: report format, company name and logo etc. can be customed.

--Standby/wake-up function: it reduces the on/off frequency and enhances the experimental efficiency. Carrer gas, power consumption and cost are lowered in standby mode.

--Intelligent oxygenation Function: the software adds oxygen subject to changes in conditions and samples to save reduction agents.

--Solution Library: a solution library is built-in and there is no need to develop new approaches.

--Periodic maintenance reminder: time and cycle of consumable replacement are determined based on sample features, quantity, oxygen consumption, etc., and reminders will be issued timely.

--Self-diagnosis: if experimental conditions are not up to standard or not prepared, users can choose from 23 fault diagnosis methods to automatically raise a pop-up alarm.

--Data processing: experimental results can be easily reached by RSD and mean value calculation.

--Calibration methods: accurate experimental data are output by one point or multiple points.

--Audit trail: The software has developed user permission hierarchy rules for easy traceability in accordance with FDA 21 CFR Part 11

--LIMS: the software share data with the laboratory information management system.

Application

The Dumas Nitrogen Protein Analyzer is widely used to determine the total nitrogen content in diesel exhaust fluid, cereals (grain), seeds, meat, meat products, animal feed, dairy products, red wine, fertilizers and soil.

• AOAC: using the Dumas method as a standard method for the determination of crude protein content in grains and oilseeds, meat, meat products and animal feed.
• ISO: using the Dumas method for the quality assessment of cereals, pulse, ground cereal products, oilseeds and animal feed.
• AACC and ICC: using this method to determine grain protein content.
• ISO and DIN: using this method for evaluating dairy products.
• AOAC and ISO/DIN: using this method for determination of total nitrogen in fertilizers and soils.
• ISO,2015: using this method for determination of nitrogen content in natural raw rubber and natural latex.