Occupational hygiene is the discipline dealing with the identification, assessment and control of environmental factors of chemical, physical and biological nature stemming from industrial activities, inside and outside the workplace (to prevent and possibly remedy all situations). These factors may in fact affect workers and people’s health and welfare. As for chemical pollutants, Mérieux NutriSciences samples and analyzes the pollutants that can be typically detectable at the workplace. Measurements of smell concentration (a strongly recommended analysis in cases of undue release of smell) and environmental controls through portable tools (of any situation of pollution as a result of remediation, fire, etc.) are also carried out: 

Downloadable Chain of custody

The Chain of custody is a document of fundamental importance to correctly manage samples information during sampling, transport, analysis and reporting. It guarantees the traceability of every sample. Mérieux NutriSciences offers templates that can be downloaded from the website and then filled in to accompany samples.

Asbestos and Artificial fibers

Thanks to accredited analytical techniques such as PCM (phase contrast microscopy) and SEM (scanning electron microscope), Mérieux NutriSciences samples and analyzes all the pollutants that can be typically detectable at the workplace, artificial mineral fibers and asbestos.

Chemical substances

Mérieux NutriSciences is able to sample and analyze the pollutants typically detectable at the workplace as contaminated organic (aromatic organic and chlorinated substances, etc.) and inorganic (metals, acids, ammonia, aldehydes, etc.) contaminants.


Soil gas sampling is usually carried out in contaminated areas or areas that can be potentially contaminated with dangerous substances vapors. The measurement generally aims at determining the concentration of compounds that will be used for the analysis of carcinogenic type risk, toxic, genotoxic any receptors. Among the different substances that can be detected by the Canister, there are organic compounds (EPA TO 15) and MADEP hydrocarbon fractions (MADEP APH REV. 1 2009).

Flux chambers

The sampling of volatile organic/inorganic compounds is performed with flux chambers and it gives an estimate of the quantity of pollutant emitted from contaminated soil or contaminated fluids, depending on the unit of surface and unit of time. The sampling occurs through a cylindrical chamber open on one side and with a controlled environment. Inert and pure gases are introduced in a determined point and at a constant flow rate while the sampling of the required pollutant are performed through a second line; two further openings discharge the internal overpressure and control the internal microclimatic conditions of the support. The sampling of organic and inorganic compounds of different nature can be carried out.

GAS FREE analysis

Mérieux NutriSciences can sample and analyze pollutants, thus emitting a Test Report to obtain the GAS FREE Certification.


November 29th, 2021
Company News
Mérieux NutriSciences - Peru announces the inauguration of its new facilities in Lima, the biggest and more modern laboratory in Peru, focused on food.  This new laboratory is located in Calle S...
November 22nd, 2021
Company News
Meet our inspiring colleagues! This week in our #InspiringColleagues series, we invite you to meet Félix Becerril, Food Engineering at Mérieux NutriSciences México, who is sharing a little about hi...