Transflection Fiber Probes

Main features

Sapphire optics
Zero-straylight optical design for maximum spectral accuracy
On-line transmission spectroscopy at long distance in wide range of liquids (from transparent to poorly transparent)
High throughput in any part of UV - Vis or Vis - NIR spectra
Flexible and robust for industrial applications in harsh environment
Compatible with all spectrometers
ATEX-compatible design on request

Artphotonics_Sale from stock Summer 2026

Description

FlexiSpec® product line includes the latest generation of Transflection Dual Pass fiber optic probes to be used with any spectrometer or photometer in any part of UV –Vis or Vis – NIR spectra. Sapphire windows and a number of removable heads with variable optical path length allow to use Transflection probe in wide range of liquids. The new 2026 design of Transflection Probes integrates an optimized beam geometry and advanced internal light‑management architecture that effectively eliminates straylight within the probe body. This results in:
•True double-pass measurement without parasitic reflections
•Accurate absorbance at high optical densities
•Improved linearity over extended concentration ranges
•Enhanced reproducibility in PAT applications

By request probe shaft can be electrically heated to prevent moisture condensation on optical windows.

Stainless Steel or Hastelloy C22 schaft is suitable for the work in harsh environment. Transflection Dual Pass fiber optic probes are compatible with process-interfaces to ensure the cleaning and reaction monitoring in lab, pilot plant and industrial setup to run full automated process control.

For more information please visit our “Downloads” section and find relative articles at our “Publications” page.

Specs

Specification of Fiber Optic Transflection Probes FlexiSpec®
Fiber type	Silica UV-Vis	Silica Vis-NIR
Operating spectral range	0,2 – 1,3 μm	0,4 – 2,2 μm
Gap (optical pass)	2; 5; 10mm gap (4; 10; 20mm path)
Temperature range	0°C to +200°C
Minimum Bending Radius	120 mm (for 600 μm core fiber)

Common Parameters of Fiber Optic Transflection Probes FlexiSpec®
Total Length	2m (opt: 1 – 30m)
Shaft Length	200mm (opt: 50 – 500mm)
Shaft Diameter	12mm
Shaft Material	Stainless Steel, Hastelloy C22
Protective Tube Material	Liquid Tight Stainless Steel -Conduit, KOPEX-Tube
Input / Output Connectors	Long SMA; FC/PC; ST
Flange	Any flange type, GTAW welding