The PT38 probe is an industrial style 3/8" stainless steel probe with integrated fibers. The sensor material is housed in a replaceable screw-on cap and is available in ZERO DRIFT AP chemistry or the HCR chemistry for hydrocarbons. The probe has a built in thermister.

SEOX-PT38-A $499
SEOX-PT38-A $600
replaceable sensor caps
SEOX-38CAP-A $99
SEOX-38CAP-HCR $150


SEOX Dip Coated Fiber Probes in Stainless Steel Ferrules
Fibers (1000um diameter) are mounted in stainless steel tubes for mechanical strength, polished and then coated with AP or HCR chemistry. The other end is terminated with an SMA connector. The probe is coupled to the NEOFOX electronics using a bifurcated fiber assembly. The 1/16" probe is for general purpose while the 1/4" probe is made especially for high pressure applications. It is rated against leaks to 55 bar (800 psi).

SEOX-F116-A 1/16" probe with Zero Drift AP chemistry $300
SEOX-F116-HCR 1/16" probe with HCR chemsitry $410

SEOX-F250-A 1/4" probe, 55 bar, with Zero Drift AP $600
SEOX-F250-HCR 1/4" probe, 55 bar, with HCR chemistry $710



We can dip-coat other sizes and styles of probes, so call us if you need something special.

SEOX POF Plastic Fiber Almost Disposable Probes
These probes are very inexpensive, almost disposable! They are made with PMMA plastic fibers and low cost plastic connectors. They are not as rugged as the stainless steel variety, but work just as good in terms of the signal. The probes are 6" long and come in a variety of diameters.

SEOX-AP-POF-500 500 micron plastic fiber oxygen sensor/6" long $39
SEOX-AP-POF-750 750 micron plastic fiber oxygen sensor/6" long $39
SEOX-AP-POF-1000 1000 micron plastic fiber oxygen sensor/6" long $39
SEOX-AP-POF-1500 1500 micron plastic fiber oxygen sensor/6" lonng $39
SEOX-AP-POF-2000 2000 micron plastic fiber oxygen sensor/6" long $39

SEOX-BB-1000-POF Bifurcated fiber for plastic fibers $260



SEOX-G Borosilicate Glass Fiber Almost Disposable Probes
These probes are unjacketed borosilicate glass fibers, 6" long with an SMA connector. They are inexpensive, like the plastic fibers but can be used where plastic won't work.The come in a variety of diameters:

SEOX-AP-G-OX-1000 1000 micron glass fiber oxygen sensor/6" long $45
SEOX-AP-G-OX-1500 1500 micron glass fiber oxygen sensor/6" long $45
SEOX-AP-G-OX-2000 2000 micron glass fiber oxygen sensor/6" long $45
SEOX-AP-G-OX-2500 2500 micron glass fiber oxygen sensor/6" long $45
SEOX-AP-G-OX-3000 3000 micron glass fiber oxygen sensor/6" long $45

SEOX Sensor Patches and Discs
Sensor discs are clear acrylic coated with sensing chemistry on the front side. They can be glued in place and read by pointing a a bifurcated probe at the back side of the disc. If they are mounted on a clear container wall, you can read pO2 in the inside of the container from the outside, without disturbing the sample. This is very useful for measuring respiration, monitoring O2 in sterile environments and bioreactors, and other sealed systems such as glove boxes, incubators or products packaged in modified air. The drawing below shows an installation with a PT38 probe installed in a compression fitting, and an SEOX patch being read through the wall of the container.

SEOX-PATCH-A Zero Drift AP sensor discs, 1/4", 5/pack $479

SEOX-PATCH-HCR Hydrocarbon resistant O2 discs, 1/4" 5/pk $600

Fiber Assemblies Used with Sensors

SEOX-BB-1000 Bifurcated borosilicate fiber, SMA, for 1000um sensors  $320

SEOX-BB-1000-POF Bifurcated fiber, plastic fiber connector, 1mm plastic $260

SEOX-RB-125 Bifurcated bundle with 1/8" ferrule for reading sensor discs $320