Teflon PFA/PEEK Process Flow Cell

Highly Efficient and Reliable Measurements

Our Guided Wave Teflon PFA/PEEK Flow Cell was developed for sample streams that are incompatible with metal components, specifically HF semi-conductor baths. None of the cell’s wetted parts are constructed of metal. Only smooth Teflon PFA and sapphire surfaces contact the process stream. Corrosion resistant PEEK is used in the outer cell construction to eliminate any possible metals contamination originating from this part. Other major components of the cell are Teflon PFA and Kalrez® 6375UP (ultra- pure) O-rings. The Teflon PFA/PEEK Flow Cell utilizes the same optical components as our popular Multi-Purpose Flow Cell.

Process-Resistant NIR Flow Cell Construction

Since no metal parts come in contact with the liquid stream, the design is ideal for processes where even ppb levels of metal contamination can create serious problems, as in semiconductor fab etching and cleaning steps. The cell also performs well in the presence of extremely corrosive streams containing strong acids, bases, peroxides or halogenated compounds.

Quality is in the Design

Guided Wave designs quality into every probe and flow cell we build. Spectroscopic flow cell design requires stable and fixed optical path lengths, rigid optical alignment, high optical throughput, collimated (parallel) light through the sample, and smooth, turbulence free fluid flows. In addition, the flow cell materials must not contaminate the sample. The Teflon PFA/PEEK Flow Cell meets all of these requirements in a simple easy to maintain design. The net result is a flow cell that offers high signal-to-noise measurements, low thermal drift, low fl ow noise characteristics, absorbance accuracy, and low vibration sensitivity.

Operating Range

The Teflon PFA/PEEK Flow Cell operates at moderate temperatures and pressures. Specifically, safe upper limits for deployment are:

  • Temperatures to 110 °C
  • Pressures to 100 psi
  • Four standard pathlengths 2, 5, 10 and 20 mm
  • Custom paths are available by special order

Exceptional Light Transmission

Like other Guided Wave optical probes, the Teflon PFA/PEEK Flow Cell provides exceptional optical performance. Excellent peak transmission is guaranteed to exceed 45%. This means more signal, lower measurement noise and lower detection limits. The fl ow cell can be completely dismantled, then reassembled without changing the sampling pathlength, an important feature when working with established NIR calibration models.

The sample interface is a crucial component of a complete fiber optic-based analyzer system. For optimal performance, the probe must be ‘’optically matched’’ with both the spectrometer and the fiber optic cable. The Teflon PFA/PEEK Flow Cell, just as is the case for all Guided Wave’s probes, provides consistently high performance when used in combination with our analyzers and fiber.  Guided Wave has a wide variety of probe designs to meet your process needs, including the SST Probe, O-ring SST Probe, Shuttle Probe, High Safety Flow Cell, Multi-Purpose Flow Cell, Teflon Flow Cell, Extruder Probe, Gas Cell, and laboratory probes.

Common Integration with Most Spectrometers

The Teflon PFA/PEEK Flow Cell is manufactured to facilitate full integration with any fiber optic system configured with SMA 905 connectors. The cell design provides optimal performance when used with fibers having a core diameter of 400 to 600 micron. This includes FT-NIR analyzers from other vendors.

    For a complete range of applications, system options, and service, please contact us.


    Phone: +1.916.638.4944

    Fax: +1.916.635.8458



    Measurement accuracy of the stream is never compromised

    Process Insights_Guided Wave Teflon PFA PEEK Process Flow Cell

    Other SPECTROMETERS, FLOW CELLS & PROBES for Industrial Applications


    Guided Wave Process Analyzer Spectrometer


    Guided Wave Full Spectrum NIR Laboratory Analyzer Spectrometer

    Stability Monitoring System

    Guided Wave UV-VIS Analyzer Spectrometer

    Process Insights_guided wave- NIR-O_process analyzer


    Guided Wave UV-VIS Analyzer Spectrometer

    M508plus Benchtop

    Guided Wave Benchtop UV-VIS Analyzer Spectrometer

    Process Insights_Guided Wave_Model 508plus benchtop

    ClearView db

    Guided Wave VIS-NIR Dual-Beam Analyzer Photometers

    Hydrogen Peroxide Vapor HPV

    Guided Wave Analyzer System Photometer

    APHA Color Analyzer

    Guided Wave VIS-NIR Dual-Beam Analyzer Photometer System

    ASTM Color Analyzer

    Guided Waver VIS-NIR Dual-Beam Analyzer Photometer System

    Saybolt Color Analyzer

    Guided Waver VIS-NIR Dual-Beam Analyzer Photometer

    Turbidity Color Analyzer

    Guided Wave VIS-NIR Dual-Beam Analyzer Photometer

    SST Probe

    Guided Wave Single-Sided Transmission Process Probe

    O-SST Probe

    Guided Wave O-Ring Single-Sided Transmission Process Probe

    RTD-SST Probe

    Guided Wave Resistance Temperature Detector SST Probe

    Turbidity Process Probe

    Guided Wave Corrosion-Resistant Process Probe

    Shuttle Process Probe

    Guided Wave Process Probe for Monitoring Liquid Samples

    G-SST Probe

    Guided Wave Vapor Process Probe


    Guided Wave Multi-Purpose Process Flow Cell

    MPFC Heated

    Guided Wave Heated Multi-Purpose Process Flow Cell

    Axial Process Flow Cell

    Guided Wave Process Flow Cell

    Gas Process Flow Cell

    Guided Wave Transmission Gas Process Flow Cell

    High Safety Process Flow Cell

    Guided Wave Process Flow Cell For Measuring Hazardous or Corrosive Gases

    Teflon Process Flow Cell

    Guided Wave Process Flow Cell

    Teflon Axial Process Flow Cell

    Guided Wave Process Flow Cell For Highly Corrosive Processes orTrace Metal Contamination Sensitivity

    Turbidity Process Flow Cell

    Guided Wave Process Flow Cell

    Questions? We’re here to help.