Oxygen Respiration Vial


  • 20 ml vial with integrated oxygen sensor
  • Diameter / height: ca. 28 mm / ca. 61 mm
  • For small scale respirometry
  • Lids with septum
  • Measures oxygen gas (%oxygen) or dissolved oxygen (DO)

Based on the contactless sensor technology, PyroScience offers ready assembled respiration vials with integrated sensor stripes for oxygen (also in combination with temperature sensors). The glass respiration vials have screw caps with a septum, and are available with ca. 20mL (uncalibrated) volume. Adapter rings allow an easy fixation of optical fibers for read-out with optical oxygen meters from PyroScience for incubations in closed vials and/or respiration rate measurements. The elongated shape of the sensor spots allows also oxygen measurements at different heights within the vial using several fibers/adapter rings in parallel.

Standard range. This sensor is specified for an optimum measuring range of 0 to 500 hPa oxygen (0 -250% air saturation). However, without specifications, it is possible to measure in up to 1 bar pure oxygen/100% oxygen saturation/100% oxygen. For detailed specifications, see the respective pdf file in the Downloads tab.

Optical isolation. For applications at high ambient light (e.g. direct sunlight, illuminated samples) and in fluorescing / light-sensitive samples, an additional optical isolation (-OI) protection layer is added to the sensor surface to reduce enhanced sensor aging and to avoid interference with the oxygen measurements

Easy calibration. A simple ambient air calibration can be performed with a few clicks (<1 minute for equilibrated setup). For precise oxygen measurements close to 0% we also offer easy-to-use calibration capsules (OXCAL). Simply dissolve the content of one calibration capsule in 50 ml distilled water, wait 10-15 minutes, perform the 0% calibration and start measurements with a calibrated sensor. For detailed calibration recommendations refer to the manual in the downloads tab.

Standard stock item. This item is typically in stock and small numbers can be shipped quickly. This does not apply for larger amounts, which ship with standard delivery time.

Applications. To get an overview of potential applications and to see our sensors in action, please visit our Applications site!

Price List

Please visit our accessories site for all available accessories for our contactless sensors.

Optical Fiber


  • For contactless sensor readout
  • Optical fiber core Ø = 1mm
  • Ca. 1m length
  • With ST-connector and bare fiber end
  • To measure through 0-2mm thick materials

0% O2 Calibration Capsules 


For recommended 0% O2 calibration of optical oxygen sensors. Each capsule results in 50mL calibration solution (PU=10).

Septa & lids for 20 ml sensor vials


  • Septa with lids (with and without hole)
  • For replacement in 20mL sensor vials from PyroScience
  • PU = 4 pieces

Every PyroScience oxygen meter is generally compatible to this sensor. Pay attention to the correct optical fiber for contactless readout. All options can be found under accessories for contactless readout. Use the link below to get a list of all compatible meters. Select additional requirements to find the optimal meter for you and your application!


Exemplary Setup


Choose the one channel oxygen meter FireSting-O2 with the oxygen respiration vial OXVIAL20 and all necessary accessories.

  • Good value
  • Ready to go lab setup

Exemplary Setup


Choose the pocket oxygen meter FireSting-GO2 with the oxygen respiration vial OXVIAL20 and all necessary accessories.

  • Stand alone logging
  • With battery and display

Exemplary Setup


Choose the multi-analyte FireSting-PRO (4 chan.) with the oxygen respiration vial OXVIAL20 and all necessary accessories.

  • 4 freely configurable optical channels
  • + Additional pH sensor support

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