tec5USA is proud to offer a unique optical interface engineered for continuous online process monitoring suitable for many industries and materials. This 3-A certified Attenuated Total Reflection (ATR) Flow Cell seamlessly integrates into industrial environments enabling real-time data of products. ATR has a short effective pathlength and can be tailored with 1, 3, 5 or more bounces to optimize the measurement of your product. Please inquire about higher bounce options. The operational wavelength range of the tec5USA ATR Flow Cell is 190 – 2200 nm, greater than any ATR flow cell on the market. Deep UV measurements paired with solarization stabilized fibers enable the high sensitivity measurement performance needed to meet the growing demands of our customers.

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Increase yield, improve operational time, and allow more automatic process control after installing online ATR Flow Cells combined with tec5USA analyzer systems. This ecosystem provides critical information to your PLC/DCS/SCADA system granting a fast return on investment. In-situ monitoring allows for closed loop feedback to optimize processing conditions using Process Analytical Technology in Pharmaceutical, Food, Beverage, Chemical and Petrochemical applications.

3-A certification indicates this ATR Flow Cell adheres to the 3-A sanitary standards for hygienic design and FDA-compliant food contact material construction necessary for the food and pharmaceutical industries. The ATR Flow Cell is designed to be permanently left in place for routine production and CIP with a wide working pH range and robust manufacturing to withstand cleaning chemicals and demanding thermal cycling.


  • Wavelength Range 190 – 2200 nm
  • Spectral Range UV-Visible-NIR
  • Fiber Optic Connection 0.22 NA, FSMA
  • Measuring Principle Attenuated Total Reflection
  • Sample Interaction / Bounces 1, 3, or 5 bounces (more upon request)
  • Body Material 316 Stainless Steel (others upon request)
  • Optical Material UV-enhanced sapphire
  • Dimensions 2” x 8"
  • Chemical Cleaning Rated for Clean In Place recipes at <2pH (Nitric Acid / Phosphoric Acid / Hydrogen Peroxide) and >12 pH (Sodium Hydroxide)
  • Pressure 0 – 100 psi
  • CIP/SIP Yes
  • ATR Gaskets Viton
  • Flange Connection 2” Tri-Clamp Fittings (2.516” OD ferrule) Other interfaces available upon request

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