NIRSpec UAN Process analyzer
The state of the art solution for on-line analysis of the composition of Urea Ammonium Nitrate.
NIRSpec UAN analyzer can measure not only the concentrations of the main UAN components: Urea, Ammonium Nitrate and Water, but also the concentration of the unwanted by-product Biuret, which is becoming an increasingly important quality parameter of UAN.
Accurate continuous/real-time measurements and the unique capability of measuring the concentration of Biuret enable a better control of the quality of the UAN in the production process.
The analytical technology is based on the Near Infra-Red spectroscopy and the state of the art proprietary multivariate calibration.
On-line measurement of 4 UAN components: Urea, Ammonium Nitrate, Water and Biuret.
Durable industrial design.
Accuracy up to 0.1% wt.
Compensation for product temperature variation.
Low sensitivity to optical window fouling.
Automatic washing/cleaning of optical windows.
Operating pressure up to 10 bar.
Operating temperature up to 120 °C.
RS485 MODBUS interface.
We developed a unique (PAT) solution for on-line analysis of UAN composition, which enables measuring not only the concentrations of the three main UAN components, namely: Urea, Ammonium Nitrate and Water, but also the concentration of the undesirable by-product Biuret, which is becoming an increasingly important quality parameter of UAN product.
Quantitative analysis of Biuret on-line is a particularly challenging problem, because the physical and chemical properties of the biuret molecule are similar/close to those of Urea. Therefore, analytical methods (PAT solutions) involving measurements such as conductivity, refractive index and density generally do not solve it satisfactorily. And, this is further complicated by typically low concentrations of Biuret in UAN.
Near-infrared (NIR) spectrometry has a better selectivity, however the similarity between the absorption spectra of the two molecules is still high and building/obtaining a good calibration is a difficult problem the solving of which requires R&D and deep expertise and knowledge in the field of multivariate calibration (chemometrics) and applied spectroscopy.
We solved it and developed the state of the art calibration model capable of resolving not only the three main components but also biuret.
On-line measurement of Biuret concentration (in addition to the main 3 UAN components).
Accuracy up to 0.1% wt. (for all components).
State of the art (proprietary) multivariate calibration with compensation for product temperature variation and for turbidity.
Robust, durable industrial design (no moving parts).
Large transillumination area, hence less sensitivity to optical window fouling, better repeatability.
Continuous on-line quantitative analysis of UAN for better process (product quality) control.
Measurement of 4 UAN components: Urea, Ammonium Nitrate, Water and Biuret.
Eliminates time-loss and cost for sampling and laboratory measurements.
High accuracy, repeatability and stability.
Low operating and maintenance costs.
Real-time on-line/in-line process analytics (PAT) is one of the corner stones in the upcoming Industry 4 & Quality 4 revolution. Effective process and product quality control can only be achieved with real-time (fast) measurements, therefore, conventional off-line laboratory analysis (often too slow/infrequent and costly) is being replaced by on-line analytical instruments/sensors that give instant feedback and can bring process & product quality control to the next level, and we are striving for that.
Areas of Activity
Quantitative and qualitative analysis of liquid products. Analysis and characterization of light scattering media (suspensions, emulsions).
Process Analytical Technology (PAT) solutions for on-line/in-line/at-line analysis and monitoring of product quality in a production process.
Research & development
New analytical instrumentation/solutions
Multivariate calibration models.
Process Analytical Technology Solutions
for on-line/ in-line/ at-line analysis and monitoring of industrial processes
We are experts in applied molecular spectroscopy (UV-Vis-NIR-MIR) providing Process Analytical Technology (PAT) solutions for on-line/in-line/at-line analysis and monitoring of industrial processes (product streams).
Research and development of new analytical instrumentation and solutions along with multivariate calibration is an integral part of our business.
Continuous innovation is one of the main pillars of the company.
Member of Lithuanian laser association
Sprana is a member of well-known Lithuanian laser association, which was established in 2004.
The Association brings together institutions and enterprises for the development of its activities in the Photonics field– one of the Lithuanian Government’s approved high-tech priorities.
Dr. Raimundas Steponavičius
+370 685 30 552
Mr. Mindaugas Steponavičius
+370 650 57 256
Mokslininku street, 6a
08412, Vilnius, Lithuania, EU