Sampling Tools


SPP100 Sample Conditioner


ETG permeation sample conditioning systems are designed to prepare hot gas sample streams for high flow, high performance gas monitoring applications. The ETG permeation system will remove particulates, mists & water vapor from a gas stream without the loss of analyte gasses.


Sample Inlet

Maximum Temperature: 120°C

Maximum flow rate: 2,5 lt/min

Maximum water content: 90°C DP


Air Requirement


Purge Air Dew Point: –40°C

Recommended Flow rate: 7,5-10 lit/min

Maximum flow rate: 10 lt/min

Pressure: 0-4 bar


Sample Outlet


Ambient temperature

Heated (optional)

Dew point well below 0°C

Gas Probes


0.33m Gas Probe


Use this hand held gas probe to pinpoint the source of a leak or submerse the probe to determine exhaust gas concentrations.



Path Length: 0.33m

Dimensions: 7″ x 1.25″ (17.8cm x 3.2cm)

Weight: 1lb (0.45kg)


1.0m Gas Probe


For applications requiring lower detection limits, the 1.0m Gas Probe is the preferred choice. Its longer path length coupled with its small size produces detections in the most confining spaces.



Path Length: 1.0m

Dimensions: 11″ x 3″ x 1″ (28cm x 7.6cm x 2.5cm)

Weight: 5lbs (2.27kg)




Mini Retroreflector


Use this mini-retroreflector to help align and calibrate an open-path system or for general experimentation.



Dimensions: 2″ x 2″ (5cm x 5cm)

Weight: >0.25lb (>0.1kg)


Corner Cube Array


Cerex supplies portable corner cube arrays with 7, 30, and 60 elements. For long distance applications 90 and 120 element arrays are available for permanent installations. Arrays can have IR or UV coatings.



IR Response Range: 2-14 microns

IR Reflectivity: 98%

Portable Dimensions: 19″ x 19″ x 5″ (48.3cm x 48.3cm x 12.7cm)

Portable Weight: 50lbs (22.7kg)

Permanent Dimensions: 22″ x 22″ x 7″ (55.9cm x 55.9cm x 17.8cm)

Permanent Weight: 70lbs (31.8kg)


Large Flat Mirrors


Cerex supplies large flat mirrors for guiding open-path beams through multiple rooms. These mirrors can be coated for UV or IR use.



Dimensions: 18″ x 36″ (28cm x 7.6cm)


Transfer Optics


Cerex provides custom fabrication of transfer optics for your specific application.



Built to order.


“A Study on Chemicals found in the Overhaul Phase of Structure Fires using Advanced Portable Air Monitoring available for Chemical Speciation”


Gas Cells


1cm Flow Through Calibration Cell


The 1cm calibration cell is made from quartz allowing clear transmission in deep UV.



Path Length: 0.01m

Internal Volume: 0.005L

Dimensions: 0.4″ x 0.4″ x 2″ (1cm x 1cm x 5cm)

Weight: >0.25lb (>0.1kg)


15cm Calibration Cell


The 15cm calibration cell features 2″ windows for small beam path operation. Windows are selectable for UV or IR transmission.



Path Length: 0.15m

Internal Volume: 0.075L

Dimensions: 11″ x 3″ x 1″ (28cm x 7.6cm x 2.5cm)

Weight: 3lbs (1.36kg)


Linear Cells


Cerex offers custom length linear cells for gas sampling. The cells can be fiber coupled or windowed for your application. We offer cell bodies made from glass, aluminum, or stainless steel.



Built to order.


Multi-Pass Cells


Cerex offers multi-pass cells with 1m, 2m, 2.5m, 5m, 10m, 20m, and 30m path lengths for use with UV or IR. The cells can be fiber coupled or combined with transfer optics to mate to an existing system. We offer cell bodies made from glass or stainless steel.



Path Length: 5.0m

Cell Dimensions: 12″ x 4″ (30.5cm x 10.2cm)

Internal Volume: 0.75L

Path Length: 10.0m

Cell Dimensions: 14″ x 6″ (35.6cm x 15.3cm)

Internal Volume: 2.5L

Path Length: 15.0m

Cell Dimensions: 26″ x 7″ (66cm x 17.8cm)

Internal Volume: 8.5L

Path Length: 30.0m

Cell Dimensions: 38″ x 8″ (96.5cm x 20.3cm)

Internal Volume: 16L


Corrosive Cells

Cerex offers a corrosive gas multi-pass cell with a 4.5m or 1.5m path length for use with the Cerex AirSentry FTIR. All cell body materials are designed to withstand corrosive gases such as HCl, HBr, and HF. The cell features an integrated temperature controller and heater.



Path Length: 4.5m or 1.5m

Cell Dimensions: 40″ x 10.5″ x 5″ (101.6cm x 26.7cm x 12.7cm)

Internal Volume: 7L