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ToxCO Monitor Logo

Quick, easy & non-invasive screening for CO poisoning

The ToxCO® is a carbon monoxide (CO) breath analyser to screen for CO poisoning. An ideal tool for emergency services and first responders, the ToxCO® is a quick, easy, reliable and completely non-invasive way to screen for CO poisoning.

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Why ToxCO®?

The ToxCO® is an easy to use, non-invasive breath and ambient air CO monitor, with three sampling modes, mouthpiece, face mask, and ambient monitoring to alert users of potentially fatal levels of CO in the air.

Why is it important?

Clinical research has demonstrated that 'the concentration of carbon monoxide in end-expired air after breath holding correlates closely with carboxyhaemoglobin concentration'1.

With the ToxCO®, the mouthpiece and face mask sampling modes allow the user to test a patient independent of their consciousness, whilst the ambient sampling mode will safeguard the user, alerting them if they are entering an area with high levels of CO.

The ToxCO® helps to reduce unnecessary hospital admissions through instant mass screening, saving valuable time.

Benefits to the user

  • The monitor provides instant results shown in %COHb which makes interpreting patient’s results quick and easy.
  • The colour touchscreen is quick and easy use, with visual prompts for patients during each test to ensure correct results every time.
  • There is automatic calibration and D-piece renewal reminders to prolong the life of your monitor, ensure accurate readings and increase infection control.
  • The monitor has built in SteriTouch® technology for improved infection control.
  • D-piece are used in conjunction with the monitor to filter out 99.9% of airborne bacteria and single-use Steribreath™ mouthpieces for excellent, low-cost infection control.2
  • The ToxCO® will automatically log every breath test but also ambient readings when an alarm threshold is triggered for up to 500 readings.
  • There is also the option to tag a result with a place, patient’s name or ID.
  • 2 years warranty (subject to service & maintenance plan).


The latest literature for the Toxco®.

ToxCO® Consumables

Years of research and vigorous testing ensures our Bedfont® products and consumables are not only safe for consumer use, but compliant with Medical Device Regulations. Use of counterfeit or non-Bedfont® approved accessories and consumables may result in loss of performance and/or damage to your device. This risk of incorrect results could adversely affect patient care. We also remind you that counterfeit and/or non-Bedfont® accessories and consumables do not possess the quality and reliability of the original manufacturer products, nor have they undergone the Toxicology tests to ensure they are fit to be used orally, and therefore their safety and infection control efficacy cannot be guaranteed.

Image of the SteriBreath Mouthpiece

SteriBreath Eco Mouthpieces

SteriBreath Eco Mouthpieces for use with Bedfont® breath analysis monitors, combining ease of use with optimum infection control.

Image of the D-piece


The D-piece incorporates a one-way valve to prevent air being drawn back from the monitor. The mouthpiece itself has a specifically integrated infection control filter which removes and traps >99% of airborne bacteria and >96% of viruses and any moisture from the patient’s breath1. The D-piece™ should be changed every four weeks or more often if visibly soiled. An automatic reminder will appear on the screen every 28 days.

Image of the One Breath


The OneBreath mouthpiece is a single-use bacterial filter mouthpiece and can be attached directly to the monitor to take a breath sample. The OneBreath incorporates a one-way valve and an infection control filter, which are proven to remove and trap >99.9% of airborne bacteria1.

Image of the Facemask Sampling System

Face mask sampling system

This sampling system is single-patient use and allows the patient to breathe normally through a face mask in order to produce a breath sample. The face mask is available in three different sizes: infant, medium and adult.

ToxCO images

The ToxCO® is the ideal tool for emergency services to screen carbon monoxide poisoning.

Image of the ToxCO monitor
Image of model holding ToxCO
Image of the ToxCO monitor

Technical specifications

Concentration range(CO)(Mouthpiece) 0-54%COHb/0-600 ppm
Display Full colour touchscreen
Detection principle Electrochemical sensor
Repeatability ≤±5% difference on consecutive readings
Breath and ambient test accuracy ≤±3ppm/10% – whichever is greater*
Power 3 x AA (LR6 or equivalent) - up to 1000 minutes; 1 x CR2032 Lithium coin cell
T90 response time <30 seconds
Operating temperature 0-50°C
Storage/transport temperature 0-50°C
Operating/storage/transport pressure Atmospheric ±10%
Operating humidity 15-90% RH (non-condensing)
Storage/transport humidity 0-95%
Sensor operating life 2 years
Sensor sensitivity 1ppm
Sensor drift <5% per annum
Dimensions Approx. 37 x 77 x 140mm
Weight Approx. 215g (including batteries)
Materials Case: polycarbonate/ABS blend with SteriTouch® anti-microbial additive; D-piece™: polypropylene; SteriBreath™: polypropylene, OneBreath™ : polypropylene
H2 cross sensitivity ≤8%


1. M J Jarvis D. Low cost carbon monoxide monitors in smoking assessment. [Internet]. PubMed Central (PMC). 2017 [cited 9 February 2017]. Available from:

2. Public Health England. An Evaluation of Filtration Efficiencies Against Bacterial and Viral Aerosol Challenges Report No. 17/001. London: Public Health England; 2017

Where can I buy?

If you would like more information or would like to purchase one of our monitors please get in touch with us via our request a quote page. We will try our best to get back to you as soon as we can.