The CO Check + has been specifically designed as a low-cost screening device for smoking cessation.

A single breath will instantly display results on the large screen in CO part per million (PPM) or % Carboxyhaemoglobin (%COHb) – the amount of carbon monoxide attached to your red blood cells represented as a percentage.
Users are guided to hold their breath with a count down timer and then encouraged to exhale with an on-screen blow icon to assist testing compliance.
The CO Check + comes complete with all accessories, CO level and %COHb guide chart and is supplied in a soft shell carry case for easy transport.

Additionally, the CO Check + is capable of detecting environmental CO levels. When the Environmental Capture is enabled, background CO levels are taken into account when carrying out a breath test, allowing any possible environmental exposure to be clearly identified. Environmental levels are displayed in PPM.


  • Results instantly displayed on large display
  • Single press button to toggle between ppm and %COHb
  • Breath hold countdown timer to guide patients
  • Measurement of environmental CO levels
  • Supplied with Safebreath mouthpieces to ensure a complete hygiene concept


“We have been using a large number of CO Check Baby and CO Check Pro monitors in helping people to quit smoking and have found them easy to use with excellent support along the way – Health Improvement Nurse, Vulnerable Groups – Scotland.”

“We have been using the CO Check Baby Monitors for some years now and following minor teething problems, with good support have found them to be accurate and effective. Midwifery Teams Midwifery Manager – Hampshire – UK.”

“I have been using the CO Check Baby for breath testing pregnant women that smoke and have found it to be an invaluable tool, MD Diagnostics have shown amazing support to us as a large team of Midwives” – Smoking and Pregnancy Specialist Midwife – Dorset – UK.”

Product FeaturesCO Check +CO Check + BabyCO Check PROCO Check PRO BabyCO Screen
Catalogue numberCO10CO15CO20CO30CO50
Breath hold countdown
(user configurable)
Instantly displays results
Displays CO in parts per million
Displays %COHb
Foetal Carboxyhaemoglobin
Traffic light indicators of CO levels
(user configurable)
Suitable for use with SafeBreath mouthpieces
Suitable for use with EcoStraws
Suitable for general smoking cessation
Suitable for smoking cessation in pregnancy
Suitable for screening for CO poisoning useful in occupational settings and,A & E departments.
Supplied with hard shell carry case
Supplied with soft fabric pouch carry bag
Measures Environmental CO levels and is a tick for ALL products

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