Rapid Flow Cell

These Durasens Rapid Flow Liquid Transmission Cells are designed to monitor liquid streams in process environments using transmission spectroscopy.  The design of the cells allows for the high unimpeded flow of sample thus ensuring that the sample analyzed in the cell is the timely representation of the sample in the process line or reaction vessel. The rapid flow design also ensures that the cell does not get clogged by particulates in the process stream.

The spectroscopic sensitivity of the cells can be easily tailored to a particular application by selecting the pathlength spacer that optimizes the spectroscopic measurement. The cells can be used with FTIR spectrometers or with UV-Vis-NIR spectrometers depending on the window materials. Ambient and temperature controlled models mount directly in the sample compartment.  Optional SMA interface for fiber optic spectrometers.

Features & Includes


  • Rapid unimpeded flow of sample.
  • Demountable windows and spacers.
  • Wide choice of window materials and pathlength spacers
  • Choice of window materials:  CaF2, SiO2 and ZnSe; Al2O3, ZnS and ZrO2 available on special order.
  • Pathlength easily changed by changing the spacer.
  • 0.25, 0.50, 1.0, 2.0, 3.0, 5.0 and 8.0 mm pathlength spacers available.
  • 7 mm diameter clear aperture.
  • Made from chemically resistant 316 stainless steel cell.
  • 1/4” Swagelok™ fittings.
  • Maximum operating pressure: 6.9 MPa (1000 psi).
  • Temperature controlled models available for operation up to 200°C with Viton o-rings, 260°C with Kalrez o-rings.


  • Stainless steel cell body with Swagelok™ fittings.
  • Spacer sets for 0.25 and 0.50 mm pathlengths.
  • Temperature controlled models include a K-type thermocouple and 24V cartridge heaters.
  • Viton o-rings.
  • Slide plate mounted.
  • Windows need to be ordered separately.

Related Accessories


Model No. Name Price
001-096-1 Window CaF₂ (Rapid Flow Cell)
001-096-2 Window SiO₂ (Rapid Flow Cell)
001-096-3 Window ZnSe (Rapid Flow Cell)
Model No. Name Price
048-909-1 Set of SS spacers, 0.25 mm pathlength
048-909-2 Set of SS spacers, 0.50 mm pathlength
Model No. Name Price
HTRS-16 Cartridge Heater, 0.250" x 1.25", 24V/100W $110.00
TFC-HTR Heater Assembly for the TC Liquid Cell $302.00
Model No. Name Price
ORK-011-1 Kalrez O-Ring, 13 mm OD, 11 mm ID
ORK-016 Kalrez O-Ring, 0.754 OD, 0.614 ID $72.00
ORV-011-1 Viton O-Ring, 13 mm OD, 11 mm ID $9.00
ORV-016 Viton O-Ring, 0.754 OD, 0.614 ID $9.00

Technical Info

For assistance with your order, please contact customer service at 1-800-248-3847


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