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Zero-drift AP Series Products

Zero-drift AP Series Products

We’ve developed a proprietary coating for oxygen sensing in biological environments that has zero drift from photo-bleaching in long-term exposure.

The AP Series of zero-drift oxygen sensors come in different probe and patch form factors.



Applications

  • Process control
  • Environmental monitoring
  • In line monitoring in the beverage industry
  • Wastewater treatment
  • Long-term measurement in soil

AP (Zero Drift) HCR Hydrocarbon Grade) MR (Sol Gel)
Zero Drift, No moisture interference, highly stable Hydrocarbon compatible (fuels, organic solvent, alcohols) Sol gel matrix, moisture resistant, high temperature performance, medical applications
Optical Sensors Commercial Electrodes
Low maintenance High maintenance
Life span of at least 1 year The general electrode’s life span is around 3 months
O2 sensors do not consume oxygen, which makes continuous contact with samples possible O2 electrodes consume oxygen at rates of ~0.1 micrograms/hour
Immune to salinity, pH and ionic strength changes of environment Salinity, pH change, and ionic strength all have the ability to affect the electrode
Simpler and less frequent calibration Hourly recalibrations can be required for electrodes
Sensor coating formulations are offered for a wide range of environments Electrodes are generally not compatible with various chemicals
Optical sensors are highly specific and are not affected by chemicals imposed by environment such as CO2, organics, moisture, etc.. Interference from various chemicals and sampling conditions is commonly experienced
Ease of production enables manufacturing flexible sensors form factors such as probes, patches, cuvettes, etc.. Generally, electrodes are solely offered in probe or cell membrane format
Sensor transducers can be applied on flexible patches and placed inside biological reactors for non-invasive optical measurements Electrodes normally do not lend themselves to non-invasive measurements

AP formulation (polymer) HCR formulation (sol gel) MR formulation (sol gel)
Response rate of probes T90 = 3 seconds T90 = 1 second T90 = 1 second
Response rate of patches T90 = 0.1-0.3 seconds T90 = 0.1-0.2 seconds T90 = 0.1-0.2 seconds
Dynamic range in gas 0-100% O2/0-760 mmHg O2 0-100% O2/0-760 mmHg O2 0-100% O2/0-760 mmHg O2
Dynamic range in water (DO) 0-40 ppm (wt) 0-40 ppm (wt) 0-40 ppm (wt)
Dynamic range in other liquids 0-oxygen saturation level 0-oxygen saturation level 0-oxygen saturation level
Resolution in gas 0.005% O2 / 0.04 mmHg 0.05% O2 / 0.4 mmHg 0.05% O2 / 0.4 mmHg
Resolution in water (DO) 0.002 ppm (wt) / 2.0 ppb (wt) 0.02 ppm (wt) / 20 ppb (wt) 0.02 ppm (wt) / 20 ppb (wt)
Resolution in other liquids 0.005% of oxygen saturation level 0.05% of oxygen saturation level 0.05% of oxygen saturation level
Accuracy 5% of reading 5% of reading 5% of reading
Lowest detectable level (gas) 0.005% O2 / 0.04 mmHg 0.05 % O2 / 0.4 mmHg 0.05 % O2 / 0.4 mmHg
Lowest detectable level (water) 0.002 ppm (wt) / 2.0 ppb (wt) 0.02 ppm (wt) / 20 ppb (wt) 0.02 ppm (wt) / 20 ppb (wt)
Lowest detectable level in other liquids 0.005% of oxygen saturation level 0.05% of oxygen saturation level 0.05% of oxygen saturation level
Sensor drift Zero drift long term continuous operation 0.0001 O2% per hour 0.0001 O2% per hour
Operating temperature -50 to + 100 C -50 to + 120 -50 to + 120
Probe lifetime 1 year before refurbishing 1 year before refurbishing 1 year before refurbishing
AP Formulation HCR Formulation
Designed for monitoring oxygen gas and dissolved oxygen in biological environments. Designed for monitoring oxygen in environments with aggressive chemicals such as pure acetone, toluene, benzene, alcohols, gasoline, diesel, jet fuels, etc..
H2O2 (Hydrogen Peroxide at 30%)
Isopropanol
Ethanol
Methanol
  • Ethylene Oxide - 480 mg/L/45 Celsius/50%/ 2 Hours (all formulations)
  • Autoclave (only HCR and MR formulations)

  • Available Options

    Our high-performance zero-drift acrylic oxygen sensor patches (AP series) are designed for non-invas..

    Available Options

    Replacement oxygen sensor cap (zero-drift, AP series) for DOPO2. This cap is attached to DOPO2 EOM a..

    Available Options

    High performance, flexible semi-disposable oxygen sensor fiber optic plastic probe. This probe (z..

    Available Options

    Our new needle oxygen probes are an industry first. These unique oxygen probes are ideal for measur..

    Available Options

    Our zero drift oxygen sensor stainless steel fiber optic probes are designed for monitoring of oxyg..

    Available Options

    Our high-performance Zero-drift oxygen sensor stainless steel probes with an embedded thermistor are..

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