Products  Kaiser Raman Probes   Kaiser Raman PhAT probe

Kaiser Raman PhAT probe

The no-touch, focus-free solution for Raman lab or process solids measurement

For solids and semi-solids analysis, the PhAT probe reigns supreme. Its state-of-the-art, stainless-steel probe design produces representative, focus-free, quantitative Raman measurements. The PhAT probe illuminates a large surface area and eliminates the need to align the probe for surface roughness.

A large excitation spot (6 mm) and multiple collection fibers in the PhAT probe achieves heterogenous solids sampling in both the axial and lateral dimensions. In doing so, it provides information on deeper layers in addition to the surface, which is highly useful for measuring heterogenous solids such as tablets, capsules, food solids, and polymer beads. To enhance sampling flexibility, both insertion and non-contact sampling optics are available for the PhAT probe.

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Additional Components

Kaiser Raman Rxn2 Hybrid front left corner view

Kaiser Raman Rxn2 Hybrid Analyzer

Provides both traditional small spot Raman sampling and PhAT-based wide area Raman sampling

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Kaiser Raman Calibration Accessory product HCA

Calibration Accessory

Easy-to-use calibration protocol for qualitative and quantitative spectral analysis

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Kaiser RamanRxn Probe front left view

RamanRxn probe

Laboratory probe compatible with immersion, bioprocess, and non-contact optics

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  • Non-contact measurement of heterogeneous solids for better representation
  • Improved process control and efficiency through faster measurements
  • Non-destructive measurements from a distance
  • Reproducible sampling
  • “Focus free” alignment
  • No need to align probe for surface roughness
  • Surface and deep layer analysis

Field of Application

  • Polymers: extruded pellet quality, crystallinity, density, raw materials
  • Pharmaceutical: crystallinity, polymorphism, granulation, blend uniformity, content uniformity, coating, tableting
  • Chemicals: final product quality, blend impurities, crystallinity, raw materials
  • Food & Beverage: quality of dairy solids, meat and fish composition

Features and Specifications

Measuring principle

Laser wavelength
785 nm

Spectral coverage
175-1890 cm-1 (785 nm)

Maximum laser power into probehead
<499 mW

Sample interface
Temperature: 10°C to 40°C
Pressure: ambient
Relative humidity: 20-80%, non-condensing

Body and window materials
Body: 316L stainless steel
Window: optical-grade materials

Fiber optic cable
Design: PVC jacketed, proprietary construction
Connections: proprietary electro-optic
Temperature: –40 to 70°C
Length: 15000 mm, custom lengths available
Minimum bend radius: 152.4 mm (6 inches)

Length (mm)

Diameter (mm)

Working distance 
1 mm spot size = 35 mm focal length
1.5 mm spot size = 50 mm focal length
3 mm spot size = 125 mm focal length
4.7 spot size = 200 mm focal length
6mm spot size = 250 mm focal length

Hazardous area certifications
ATEX, North American, IECEx

Documents/ Manuals/Software


Application Notes:

bIO-PRO KS 785 Installed Lab with operator


2020 Pharma Innovation Award

Our Kaiser Raman bIO-PRO, KS bioprocessing probe was recently selected as a 2020 Pharma Innovation Award winner by Pharma Manufacturing Magazine!

The Kaiser Raman bIO-PRO, KS probe provides fast, accurate measurement of key bioprocess variables from lab-to-process. It is an exciting advancement in our already well-established Kaiser Raman bioprocess product portfolio.

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Two employee with proper PPE and stainless steel Bio Reactor_resized


Advanced bioprocess control

Learn how Kaiser Raman technology helped Nicro eliminate time-consuming offline sampling in favor of real-time monitoring of critical parameters in fermentation processes.

Read success story

2021 Coblentz Society William Wright award recipient, Dr. Ian Lewis


2021 Williams-Wright Award

Dr. Ian R. Lewis, Director of Marketing at Kaiser Optical Systems, has been named the 2021 Williams-Wright Award recipient by The Coblentz Society for his significant contributions to vibrational spectroscopy. The award was presented during the 2021 Pittcon Conference & Expo.

Read award announcement