Technical Specification

Breath Test How-to Video



Gastro+™ Gastrolyzer

The Gastro+™ is a hand-held and portable hydrogen monitor, for quick and easy breath analysis.
Revolutionary Interface

Full-colour touchscreen with
an easy-to-use interface

2 sampling options

Breath testing by mouthpiece or
by facemask for infant/elderly patients
who struggle to hold their breath

Testing protocols

Built-in testing protocols with
built-in countdown timer

Ergonomic Design

An ergonomic design, fully portable and
incorporated with SteriTouch® technology
for optimum infection control

Patient profiles

Create and store up to 10 patient
profiles to view a graph of their results

Multi-patient testing

Test all 10 patients at one time
even with different protocols

Technical Specification of the Gastro+™

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Concentration range

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Response time
<40 seconds

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Full-colour touchscreen

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Operating temperature

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Detection principle
Electrochemical sensor

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Storage/transport temperature

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Operating humidity
15-90% non-condensing

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whichever is greater*

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Sensor operating life
2 years

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3 x AA batteries
(up to 1000 minutes)

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CO cross interference

*Readings of >200ppm at temperature between 26-35ᵒC can decrease accuracy to 15%.

As easy as…

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Infection Control
Maintenance Guidelines


Our consumables are made to the highest quality at the most cost effective prices.
Gostro+ and Gastrolyzer Mouth Piece

SteriBreath mouthpieces:

SteriBreath™ mouthpieces are individually sealed for optimum infection control.
Condensation confirms an accurate breath sample. SteriBreath mouthpieces are attached to the monitor via the D-piece™.

Facemask adaptor

The facemask adaptor is single-patent-use. A facemask is attached to one end and then the sampling system connects to the monitor via the D-piece™.

Monitor cleaning wipes

Free from alcohol to ensure continued performance of your monitor. Products containing alcohol cannot be used on any of the Gastrolyzer range. Pack of 50 wipes.


The OneBreath incorporates a one-way valve and an infection control filter, which are proven to remove and trap >99.9% of airborne bacteria1.


The D-piece incorporates a one-way
valve and an integrated infection control filter
which removes and traps >99% of airborne bacteria
and >96% of viruses. The D-piece
should be changed every four weeks.


Facemasks are single-patent-use and
allow the patient to breathe normally
to produce a breath sample. There are
3 sizes: Large, Medium, and Small.

Calibration gas

The Gastro+ requires calibration
every 3 months using 100ppm H2 gas,
provided as a kit or replacement cylinder.

The Gastrolyzer® monitors are products from Bedfont® Scientific Ltd.

Our family, innovating health, for yours.

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Bedfont® Scientific Ltd., Station Yard, Station Road, Harrietsham, Maidstone, Kent, ME17 1JA, England
© 2020 Bedfont® Scientific Ltd., all rights reserved | Privacy Policy | Bedfont® Scientific Limited reserves the right to change or update this website without prior notice.
Incorporated in England and Wales under registered number: 1289798



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