Breath alcohol and interfering substances

Making measurements accurate

Traceable measurements of breath alcohol and interfering substances are required to underpin drink driving, airline and other workplace legislation. Gas standards containing these compounds can be used, for example, to calibrate evidential breath analysers as specified by the OIML (International Organization of Legal Metrology) International Recommendation OIML R 126 (Evidential breath analyzers).

Gas standards containing ethanol and interfering substances can be prepared to the requirements of the customer. Examples of the most common components in these mixtures are given below. Other interfering substances (such as those listed in OIML R 126) may be available on request.

Component	Matrix gas	Amount fraction range
		From	To
Ethanol	Nitrogen or air	20 μmol/mol	1.6 mmol/mol
Methanol	Nitrogen or air	10 μmol/mol	100 μmol/mol
Acetone	Nitrogen or air	10 μmol/mol	100 μmol/mol
Toluene	Nitrogen or air	10 μmol/mol	100 μmol/mol
Methyl ethyl ketone	Nitrogen or air	100 μmol/mol	1 mmol/mol
Ethanol	Nitrogen or air	20 μmol/mol	1.6 mmol/mol
Carbon dioxide		10 mmol/mol	100 mmol/mol

Don’t see what you are looking for? Our diverse skill set enables us to provide bespoke solutions. Please contact us to discuss your requirements.

Contact us