Model 905V Pharmaceutical Vial O2 Analyzer

The Quantek Model 905V is a pharmaceutical headspace oxygen analyzer. Use it for headspace oxygen analysis in pharmaceutical products – vials, blister packs, bottles, or difficult tubes of products (such as cosmetics). Achieve results with as little as 1cc of headspace.
Pharmaceutical preparations packaged in vials are often gas-flushed to provide a specific atmosphere in the vial, with defined levels of oxygen, nitrogen or other gases. Depending on the product, these vials can range in size from 1 ml to 250 ml or larger. Small vials present some difficulty for oxygen analysis because the sample volume available is often quite small. A five ml vial, for example, may have only one ml of headspace gas. For direct analysis with a pharmaceutical oxygen analyzer, the instrument must be capable of analyzing very small volumes. Our pharmaceutical oxygen analyzer is designed for this process.

While we recommend a minimum of 1mL of sample, the analyzer will produce a partial response with as little as 0.5mL of headspace. Using interpolation, the final result can be inferred – or, you can combine two samples to produce a valid, averaged result across 0.5mL samples.

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SKU: Model 905V Category:
Lead Time: 4-8 business days


The Model 905V is a rugged benchtop unit housed in a heavy-duty metal enclosure, well suited for continuous use in routine QC testing in the laboratory. With built-in battery operation (optional) in addition to the AC mode, this unit can be easily transported and used at remote locations such as the packaging line.

Model 905V Key Features and Attributes


The Model 905V sensor is designed specifically for this purpose. The oxygen sensor internal chamber has a very small volume of about 0.1 cc. The sensor is located directly behind the front panel to eliminate excessive volume. The sensor has in /out ports with a 0.03 in. ID. The vent port of the sensor connects to a short piece of narrow-bore tubing for sample exhaust and introduction of zero or calibration gases.


The oxygen sensor output is very linear through the entire range of measurement. This allows for a single point calibration to be performed anywhere in the measurement range. Span calibration is accurately done by testing room air, which should give a reading of 20.9% oxygen. Calibration standards can also be used if required by in-house test procedures.


Microprocessor based electronics are used for sensor signal processing, battery charging and on/off control to provide high accuracy and reliability. The heavy duty, proprietary oxygen sensor is designed to provide many years of service, is totally sealed and requires no maintenance. The sensor output is compensated for ambient temperature variations.


With its low power requirement, the Model 905V can be operated with an optional battery for those applications where AC power is not readily available, or for convenience if spot checking samples at different locations. A totally sealed, long-life internal 12 Vdc gel battery accepts a full or partial charging cycle and will operate the unit for up to 8 hours. The charger module plugs into a standard 110-240V outlet for charging or continuous operation. Alternatively, the unit can be powered from an external 12-24 Vdc source.

Expected Lifetime (oxygen) 4-5 years
Oxygen Range 0.0 to 100%
Oxygen Sensitivity 0.01%
O2 Resolution 0.01%
Analog Output Not Available
Resolution 0.01%
Accuracy : +/- 1% of reading; +/- 0.1% absolute below 10.0%
Drift less than 0.4% per year
Oxygen Sensor Type Proprietary electrochemical cell, expected lifetime 4-5 years
Response Time 15 seconds to T95
O2 Sensor Lifetime 4-5 Years
O2 Sensor Body ABS Resin
Sample Connection Sample Probe
Sample Method Water displacement method; alternately, product can be squeezed to introduce sample to analyzer
Sample Pump Not Available
Pump Timing Not Available
Minimum Sample Required 0.5cc
Sampling Assembly Probe with ultra fine zero volume needle, low volume PTFE tubing
Oxygen Calibration Controls Fine SPAN, Coarse SPAN, Zero adjustment
Instrument Calibration Calibrates with room air; coarse SPAN adjustment on back; fine span adjustment on side; ZERO adjustment on side
Exhaust port Vents to air
Power Supply 100-240V (50-60Hz) Charger included, with US or international interchangeable plug adapter (upon request)
Backup Power Optional 12V internal battery pack
Battery Operation Optional
Input Voltage 100-240V, 50-60Hz
Battery Life 8-12 hours before recharging
Measures: O2, CO2 CO2
Form Factor Benchtop
Size 9.8in x 4in x 10in. (249 x 102 x 254 mm)
Weight 8 lb. (3.6 Kg)
Warranty 2 years, parts and labor
Standards CE, RoHS
Included Consumables Low volume sample probe, three zero volume puncture needles, tubing & tee fitting, two plastic 1cc and 5cc syringes, 115/240Vac to 12Vdc power adapter
Included Documentation Owners manual (includes operating instructions with detailed calibration instructions, calibration certficate, precautions), NIST calibration certificate
Origin of Goods Our products are manufactured in the U.S.A.
Products by Gas Oxygen
Products by Applications Pharmacetical
  • Fine .01% resolution standard
  • Includes sampling probe with ultra • low volume tubing
  • Includes fine needles
  • Easy to use side span adjustment

Optional Items

  • Optional internal battery. The battery pack is a 10 AA NiMH with high temperature safety shutoff, low voltage cutoff, and 16 hour typical runtime.
  • Optional internal pump (this allows analyzer to be used with pump actuation for applications with larger amounts of headspace)
  • CONTAINER TEST KIT – Add the container test kit for difficult applications where using the pump is not practical. Our patent pending sampling kit can be used to collect samples from almost any imaginable container. Simply puncture the package under water, collect the sample in our inverted funnel, and then sample via the rubber stopper.