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Alco-Sensor FST®

The Alco-Sensor FST is the industry’s fastest selling Preliminary Breath Testing (PBT) instrument. We are fast approaching 200,000 of these instruments being used in the field, to date.
This evidential grade breath alcohol tester produces precise, accurate, and repeatable results on direct breath sample testing. It also offers a simple passive breath testing procedure for fast screening of multiple subjects, as well as the capacity to “sniff” alcohol in an open container by measuring the headspace over the liquid.


Features Include:

  • Intoximeter’s reliable top-of-the-line integrated fuel cell technology
  • Patented rear-facing design for operator safety
  • Simple, intuitive operating procedure
  • Direct or passive breath testing
  • Durable, constructed of rugged ABS/polycarbonate blend material
  • Backlit LCD display, with optional multicolor backlit display
  • Lever and snap mouthpiece with illuminated mouthpiece guide
  • Impact resistant SureGripTM protective sleeve
  • Magnets on each side of instrument, to protect against loss of instrument
ApprovalsNHTSAListed on the Conforming Products List for Evidential Breath Measurement Devices.
Analytical SystemElectrochemical Sensor (Fuel Cell)Select sensor, manufactured to Intoximeters exacting specifications for accuracy, repeatability and long life.
Measurement Range0.000 to 0.440 g/210LThe off the shelf instrument is designed to offer a range of results that our customers commonly encounter when performing breath alcohol testing.  Custom ranges, and results reported in most units of measure are available upon request.
Accuracy and PrecisionHighly accurate and precise evidential grade resultsIntoximeters fuel cell based instruments set the industry standard for accuracy and precision.  These precise and linear devices offer consistent output that results in evidentiary grade analysis.
Sensor SelectivityHighly specific for alcoholFuel Cell sensors are sought after for their specificity to alcohol.
Sampling MethodFlow, Volume, Breath DropInstruments running the standard software require a consistent flow, a minimum volume and then a drop in flow before sampling a deep lung breath.  Alternate sample capture algorithms are available in customized programs.
Testing EnvironmentInstrument TemperatureThe temperature of the instrument must be at, or between, 0 and 40 degrees C. This is the generic instrument specification, and can vary per country.
Ambient TemperatureAs long as the instrument is at temperature, the instrument can be used at, or between, ambient temperatures of -20  to 70 degrees C.
Humidity10% to 100% relative humidity  (The instrument is not designed to be used under water.)
Ambient Pressure600 mbar to 1400 mbar; 450 mmHg [0 °C] to 1050 in mmHg [0 °C]
MouthpieceDirect TestingSingle chamber with air flow diversion away from the operator.  Mounts easily by “lever and snap” insertion in the lighted mouthpiece channel.
Passive TestingPassive cup permits automatic or manual collection of breath as subject blows towards the cup. Cup snaps onto the two ports in the mouthpiece channel.
Drink SnifferDrink sniffer attachment facilitates testing of the headspace over an open container for the presence of alcohol.  Sniffer snaps onto the two ports in the mouthpiece channel.
Visual OutputDisplayBacklit graphic LCD with optional multi-color display messaging to warn of important test conditions.
Audio OutputBeeperAudible tone to support displayed messaging system.
Data StorageNumber of TestsLast test record
Power OptionsDisposable Battery2 x 1.5V AA alkaline batteries
Rechargeable Battery2 x AA rechargeable batteries – Optional
Case ConstructionABS / Polycarbonate RubberRubber grip and display bezel provided with each instrument
Size, Shape and WeightDimensions4.75” x 2.75” x 1.75”
Weight7.5 oz  (212 grams)
Measurement TypesAutomatic Direct BreathAuto sampling of subjects’ deep lung breath samples.
Manual Direct BreathManual sampling option for subjects who cannot meet the minimum flow and volume requirements of the instrument.
Passive TestingManual or Automatic sampling capabilities for passive alcohol detection
Headspace SamplingCapable of measuring the headspace over a liquid to determine if alcohol might be present in the solution
SecurityPasswordCapable of requiring passcode access to instrument operations
OptionsMulti-Color BackgroundOptional multi-color display background to warn the user of important test conditions


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