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Micro+™ Smokerlyzer® CO breath test

CO breath and foetal %COHb %FCOHb monitor to help people stop smoking

The Micro+™ Smokerlyzer® CO monitor is the new and improved version of the revolutionary Micro+™ Smokerlyzer®. The Micro+™ Smokerlyzer® is a longstanding benchmark device used in clinical trials and research and is the one CO monitor for all your testing needs.

Micro+™ Smokerlyzer® CO breath test

Why Micro+™ ?

The Micro+™ is the one CO monitor for your every need, including use in clinical research and smoking cessation services. It has multiple patient profiles for adults and adolescents, but also carbon monoxide breath testing for pregnant smokers, with the ppm reading and %COHb for the mum-to-be plus the foetal ppm reading and %FCOHb conversion.

Why is it important?

It provides a visual aid to motivate smokers to quit and improve their quality of life.

Benefits to the user

The monitor provides instant results shown in exact ppm, %COHb and %FCOHb, which makes recording and interpreting patient’s results quick and easy.
Analyses carboxyhaemoglobin and carbon monoxide ppm levels.
The colour touchscreen is quick and easy use.
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 to ensure optimum infection control.
There is the familiar green, amber and red traffic light system, making CO levels instantly identifiable to patients, whilst acting as a motivational tool to help them quit smoking.
The monitor provides adult and adolescent profiles to ensure maximum motivation to stop smoking. Testing modes for adults, adolescents and pregnant women.
D-pieces 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.1
Five-year warranty for absolute peace of mind.
The Micro+™ has storage for up to 100 readings and personal profiles.
The monitor is PC interactive with COdata+™ software, free with Micro+™ Smokerlyzer®.   

Product specification

Concentration range
Full colour touchscreen
Detection principle
Electrochemical sensor
Accuracy (repeatability of reading)
< 3%
H2 cross-sensitivity
< 6%
3 x AA (LR6 or equivalent) alkaline batteries
Response time
< 17 seconds
Operating temperature range
10-40oC (Storage 50oC)
Operating humidity
10-90% (Storage 0-95%) non-condensing
Sensor operating life
5 years - 5 year warranty
Sensor sensitivity
Approx. 34 x 75 x 140 mm
Approx. 250g including batteries
Construction: D-piece™
Sensor Drift
< 10% per annum
Monitor constructions
Polycarbonate/ ABS blend, SteriTouch® anti-microbial additive, D-piece™: Polypropylene

Micro+™ Consumables

SteriBreath™ mouthpieces

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


The D-piece™ incorporates a one-way valve to prevent air being drawn back from the monitor. The breath then passes through an infection control filter, proven to remove and trap >99.9% of airborne bacteria.

Monitor cleaning wipes

Free from alcohol, ensuring the continued performance of your monitor. Pack contains 50 wipes.

Check gas for the Micro+™

To ensure optimum performance or if you suspect a sensor drift you can perform a function check on the Micro+™ using 20ppm CO gas, 1 x calibration adapter and 1 x regulator.

Micro+™ downloads

Please click on the links on the right to view our literature.

Clinical papers

Please click on the links to the right to view all the clinical papers.


1. Health Protection Agency (HPA), Porton Down, Report No 43/06, pp. 10-11 

Where can I buy?

If you would like more information or would like to purchase one of our monitors please select the country you are in on the right hand side. A full list of distributors in your area will be displayed.