D50/D200
Dumas Nitrogen/Protein Analyzer
Hanon Dumas Nitrogen/Protein Analyzer determines the nitrogen/protein content of samples through combustion, purification, reduction, and thermal conductivity detection. It efficiently analyzes a single sample in 4 minutes without pretreatment and reacts in a nontoxic and harmless way to ensure safety and environmental friendliness.
lConsiderable: a 1-disc 120-position autosampler (D200 only) is adopted to directly analyze a large number of samples
lQuick: the fast cooling function helps the device reach the shutdown temperature in 30 minutes
lPremium: core pneumatic components of SMC® and mass flow controllers of Bronkhorst® retain the reliability for a long time
lCost-effective: new consumables and efficient metal condenser dewatering technologies extend the service life
Two-stage combustion and oxidation: pure oxygen combustion in the primary combustion tube facilitates preliminary oxidation and digestion of a sample; the remaining part slides through the secondary combustion tube, together with the carrier gas, and is completely digested after being oxidized by the mixture of Pt catalyst and copper oxide;
Three-stage dewatering: most of water is removed by an electronic condenser so that the desiccant can work; traces of water is removed by primary and secondary drying tubes;
Efficient reduction: an efficient reduction agent reduces nitrogen oxides to nitrogen gas and absorbs excess oxygen;
TCD detection: the thermal conductivity detector (TCD) can determine the nitrogen produced by reduction.
Applications
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.
lAOAC uses the Dumas method as a standard method for the determination of crude protein content in grains and oilseeds, meat/meat products and animal feed.
lISO uses the Dumas method for the quality assessment of cereals , pulses, ground cereal products, oilseeds and animal feed.
lAACC and ICC use this method to determine grain protein content.
lISO and DIN (German Industrial Standards) also use this method for evaluating dairy products.
lAOAC and ISO/DIN use this method as the standard method for the determination of total nitrogen in fertilizers and soils.
lISO, 2015, Natural raw rubber and natural latex Determination of nitrogen content by this method.
Product Features
Sampling System
lThe 1-disc 120-position autosampler(D200 Only) can conduct a direct analysis of a large sample size
lSMC® pneumatic components can inject samples for 100,000 times, with low maintenance costs
lThe contactless in-situ detection function provided by anti-interference infrared
modules can interrupt self-test and pop up messages to avoid maloperation if the sampling disc is occupied (D200 Only)
lUsers can add samples freely during preparation (either solid or liquid) to enhance experimental efficiency, without stopping the automatic analysis.
Combustion Furnace System
l High-temperature, pure oxygen, and the two-stage combustion process ensure
thorough oxidation and digestion
l An efficient metal condenser and two-stage desiccants can completely remove
water.The desiccants can be reused for 2,000 times.
l New consumables can reduce nitrogen oxide, absorb excess oxygen, and prolong
the service life. Both combustion and reduction tubes can be reused for 1,000 times.
Pneumatic System
l A two-stage regulator eliminates the impact of external pressure fluctuations and
combustion-induced pressure changes on the detector system to ensure stability
l PTFE fittings and SMC® quick couplers allow for clear observation of
Contaminants and toolless maintenance
l The combustion tube and joint of an original pneumatic connector (patent
number: CN106443029B) support easy assembly and disassembly to eliminate air leakage
caused by irreversible wear of ferrule compression fittings
Software Function
Windows Chinese Version streamlines operation and improves efficiency. Click to configure parameters and conditions, and control the computer to gather, process, store and print out data.
lWireless communication of balance data: an industrial wireless communication module automatically collects weight data, with the max distance of 100m. The data display window and voice authentication function can adjust value (D200 Only)
lAir leakage inspection: the gas path can be checked automatically or manually for the convenience of users
lCustom lab report: report format, company name and logo, etc. can be customized
lStandby/wake-up function: it reduces the on/off frequency and enhances the experimental efficiency. Carrier gas, power consumption and cost are lowered in standby mode
lIntelligent oxygenation function: the software adds oxygen subject to changes in conditions and samples to save reduction agents.
lSolution library: a solution library is built in and there’ s no need to develop new approaches
lPeriodic maintenance reminder: time and cycle of consumable replacement are determined based on sample features, quantity, oxygen consumption, etc., and reminders will be issued timely
lSelf-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
lData processing: experimental results can be easily reached by RSD and mean value calculation
lCalibration method: accurate experimental data are output by one point or multiple points
lAudit trail: the software has developed user permission hierarchy rules for easy traceability in accordance with FDA 21 CFR Part 11(D200 Only)
lLIMS: the software share data with the laboratory information management system
Working Environment |
|
Power supply |
220V AC ±10% 50Hz |
Computer |
A laptop or a desktop operated with Windows 7 or above and equipped with USB or RS 232 interface |
Temperature |
5℃~30℃ |
Humidity |
≤85% |
Technical Parameters
Analysis efficiency
3-4 min each
Weighing accuracy
≤0.1mg
Detection range
0.1-500mg nitrogen
Detection recovery rate
≥99.5%
Relative standard deviation (RSD)
≤0.5% (150mg standard 10% nitrogen)
LOD
0.01mg nitrogen
Sample weight
Solid ≤1g, liquid ≤1mL
Operating system
Windows 7 and above
Sampler
D200:1 disc x 120 1 disc x 40 positions D50:1 disc x 60 positions
Detector
TCD
TCD accuracy
≤0.01℃
Carrier gas
CO2
Furnace temperature
1200℃ (MAX)
Carrier gas purity
99.999%
Oxygen purity
99.999%
Internal module communication mode
RS-485 bus
Peripheral interface
RS232, USB
Correction method
Linear or nonlinear calibration, custom calibration curve
Rated power
2000W
Dimensions (L×W×H)
735mm×560mm×560mm
Net weight
80kg