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  • QR400-7-SR Reflection/Backscatter Probes

Solarization Resistant Reflection/Backscatter Probes

Lead Time: 2 weeks

From $617.00

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A reflection/backscatter probe is a compact, versatile sampling option to measure diffuse and specular reflectance, backscatter, or fluorescence from samples as varied as solids, solutions, and powders. Reflection and backscatter measurements can provide quantitative information about the color, appearance, and chemical composition of a sample.

We offer reflection/backscatter probes in a variety of fiber core sizes and wavelength ranges. Custom options are also available.


  • General purpose -- ideal for diffuse or specular reflectance from solids; fluorescence; color
  • SR fibers -- probe assembly comprises solarization-resistant fibers (200-1100 nm)
  • Probe design -- 6-around-1 fiber bundle design, with 6-fiber leg connecting to light source and single-fiber leg connecting to spectrometer 



Select model to see full specifications


Wavelength Range:
200nm - 1.1μm
Fiber Core Size:
200 µm
400 µm
600 µm
2 m
PVDF zip tube
Silicone-coated steel monocoil
Stainless steel BX
Probe Ferrule Diameter:
3.175 mm (1/8″)
6.35 mm (1/4″)
Midway point of assembly at 1 meter
Buffer Materials:
Cladding OD:
10 µm
20 µm
30 µm
Cladding OD Tolerance:
± 4 µm
± 3 µm
SMA 905
Fiber Core Size Tolerance:
± 10 μm
± 4 μm
± 8 μm
Long Term Bend Radius:
16 cm
24 cm
8 cm
Maximum OD:
243 µm
487 µm
720 µm
Numerical Aperture:
0.22 ± 0.02 (equivalent to an acceptance angle of 24.8° in air)
Primary Buffer OD:
10 µm
20 µm
25 µm
Primary Buffer OD Tolerance:
± 10 µm
± 7 µm
± 5 µm
Probe Fiber Bundle:
6 illumination fibers around 1 read fiber
Short Term Bend Radius:
12 cm
4 cm
8 cm
Probe Ferrule Length:
76.2 mm (3″)
Probe Ferrule Material:
Stainless steel


Operating Temperature:
-65 to 300 °C