FlexiSpec®

Spectroscopy Fiber Probes & Probe Couplers

FlexiRay®

Fibers | Cables | Bundles | Accessories

FlexiService

Loan & Installation | Measurements Training | Repair | Development
News
Latest News
25 September 2026
Dual-Channel Process Monitoring: Combining NIR and Raman Spectroscopy in a Single Probe

During active pharmaceutical ingredient (API) crystallization and drying, comprehensive process understanding demands simultaneous insight into chemical composition and solid-state structure. Operators routinely track two distinct parameters in real time: residual solvent or moisture content, and crystal polymorphism. Historically, monitoring both attributes in situ presented a practical instrumentation bottleneck. Near-infrared (NIR) spectroscopy excels at quantifying water […]

Read more
28 August 2026
Simultaneous Determination of Cu²⁺, Co²⁺ and Ni²⁺ by Fiber-Optic Spectroscopy in the Visible and Near-Infrared Range

The simultaneous quantitative determination of dissolved Cu²⁺, Co²⁺ and Ni²⁺ ions is important in many fields. These include metallurgy, geology, industrial wastewater analysis and the monitoring of biotechnological processes. In many cases, their concentrations need to be measured directly at the sampling site or in-line during an operating process. The Challenge of Metal Ion Monitoring […]

Read more
Latest Events
9 September 2026
CIOE 2026 | 9-11 September 2026 | Shenzhen World Exhibition & Convention Center, China

art photonics GmbH is currently exhibiting at the China International Optoelectronic Exposition (CIOE) 2026 in Shenzhen. From September 9-11, we are represented at this premier industry event by our partner, UniqueRay Technologies Limited. Industry professionals are invited to visit Stand 8B16 to review our advanced portfolio of specialty fiber optic solutions. UniqueRay is showcasing our […]

Read more
2 September 2026
JASIS 2026 | 2-4 September 2026 | Makuhari Messe, Japan

Day 1 Update: Meet Our Technical Representative Day 1 of JASIS 2026 is officially underway. Our technical representative and R&D Manager, Alexander Novikov, is on the ground at Makuhari Messe today and ready to connect with industry professionals. If you are looking to enhance your in-line process control, this is an excellent opportunity to speak […]

Read more
About Our Company
art photonics GmbH, founded in Berlin in September 1998, is one of the worldwide leaders in development and production of specialty fiber products for a broad spectrum from 300 nm to 16 µm. Unique technologies of Polycrystalline Mid InfraRed (PIR-) fibers and Metal coated Silica fibers are used for assembly of various spectroscopy probes for medical diagnostics and industrial process control, in volume production of fiber for medical and industrial lasers, for different fiber bundles, etc. Since January 2024 art photonics GmbH is a member of NYNOMIC GROUP.
Member Of:

Mid-Infrared Spectroscopy for Monitoring of Anaerobic Digestion Processes - Prospects and Challenges

Posted on: 
27 March 2018

To develop an online probe that is not only sufficiently robust, but also able to measure crucial process variables in biogas plants is a tough challenge. Therefore, a mid-infrared (MIR) spectroscopic attenuated total reflection (ATR) probe and robust probe fitting were established. A fully automated probe control, calibration after probe cleaning, and analysis of the absorption spectra using machine learning were implemented in order to reduce maintenance of the probe to a minimum. The relevant wavelengths in the MIR spectrum for organic acids, total alkalinity, and ammonium nitrogen concentration were identified. Finally, intensive lab testing was carried out, followed by operation of the complete online measurement system at an industrial biogas plant. In order to improve signal strength and sensitivity, microelectronic mechanical system (MEMS)-based Fabry-Pérot interferometers were also investigated.

https://onlinelibrary.wiley.com/doi/full/10.1002/ceat.201500334

cross
linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram
Copy link
Powered by Social Snap