TP300-Series Transmission Probes


Out of stock


Transmission Dip Probe

This transmission dip probe is a convenient way to measure the absorbance and transmission of solutions in harsh chemical environments using our spectrometers and light sources.

The probe ferrule and tip is manufactured from chemically inert PEEK material that is radiation-resistant and has low flammability. It is designed for dual use. An adjustable pathlength tip can be used for routine transmission measurements, or for mounting transmissive pH patches in the optical path.

  • Light is directed via one fiber through the open path, then is reflected by a mirror and redirected back to a receive fiber that returns the light to the spectrometer
  • Sample is free to flow through the tip
  • Probe assembly consists of an inner stainless steel probe and outer PEEK sleeve
  • An optional stainless steel sleeve is available
  • Two adjustable pathlength tips available for transmission measurements of pH sensing

Part Number Description Wavelength Range
TP300-UV-VIS Transmission dip probe with 300 μm UV/SR optical fiber, tip required 200 – 1100 nm
TP300-VIS-NIR Transmission dip probe with 300 μm VIS-NIR optical fiber, tip required 400 – 2500 nm
RTP-2-10 Adjustable 2 – 10 mm pathlength tip for TP300 transmission dip probe 200 – 2500 nm
RTP-10-20 Adjustable 10 – 20 mm pathlength tip for TP300 transmission dip probe 200 – 2500 nm
TPSLEEVE Spare PEEK sleeve for TP300 transmission dip probe N/A
T300SLEEVE Spare stainless steel sleeve for TP300 transmission dip probe N/A


Engineering Specifications TP300-Series Transmission Dip Probes
Fiber type TP300-UV-VIS: 300 µm UV/SR optical fiber (200 – 1100 nm)
TP300-VIS-NIR: 300 µm VIS-NIR optical fiber (400 – 2100 nm)
Probe diameter: Internal stainless steel probe assembly: 3.175 mm (1/8″)
PEEK polymer sleeve: 6.35 mm (1/4″)
Probe length: 107.9 mm
Fiber length: 2 meters
Breakout: 1.5 meters from the end of the probe
Temperature limit: Up to 200º C with PEEK sleeve
Pathlength: Adjustable (2 – 10 mm, 10 – 20 mm) or fixed (See product variations table for details)
Probe material: Stainless steel internal assembly, PEEK for outer sleeve
Fiber jacketing: PVDF zip tube
Connectors: SMA 905

Applications in which this product is used:

Measurement Techniques in which this product is used: