MONITORING

We conduct air quality monitoring to analyse air pollution both indoors and outdoors. We offer realistic and scientifically grounded solutions.

The team brings years of experience in creating air quality networks, including official air quality control stations, passive samplers, and low/medium-cost sensors. The monitoring can be set up independently or complement existing networks. Support is provided for epidemiological studies and personal exposure trials.

Monitoring with passive samplers

We are specialists in carrying out monitoring studies with passive samplers. They are an efficient tool to complement data from monitoring networks. With experience across Europe, we support both official networks and projects from regional governments, municipalities, schools, and other entities. These studies allow us to assess air quality in areas without fixed stations or where specific analysis is needed.

We handle all phases of the study:

      • planning and management,
      • selection of locations and their deployment,
      • placement and collection of dosimeters,
      • quality control in reference stations, and
      • analysis of results, ensuring the highest reliability of the data obtained.

We actively participate in the development of European regulations on passive dosimeters, as members of the CEN/TC 264/Working Group 11 on Ambient Air Quality – Diffuse samplers for the determination of gases and vapors.

Distributor of passive samplers

We are distributors of passive samplers in Southern Europe, including Spain, Andorra, and Italy.

Benefits for our clients:

      • Proximity to our clients
      • Quick response tailored to our clients’ needs
      • Better and faster project management
      • Excellent track record in distribution
      • Local technical support when needed
      • Additional error checking and correction of analytical test results
      • Additional advice on passive sampling monitoring
      • Avoid unnecessary contractual bureaucracy

Most of the analysis methods carried out by our laboratory are accredited by UKAS, ensuring compliance with the requirements of the ISO/IEC 17025 standard.

Management of fixed networks

We are experts in the design, evaluation, and optimisation of fixed air quality monitoring networks, in accordance with the requirements established by Directive (EU) 2024/2881.

Our approach combines technical expertise, regulatory rigor, and practical solutions, providing our clients with the confidence of having an effective, efficient, and compliant air quality monitoring network according to current legislation.

What do we offer?
  • Macro-implementation assessment: Analysis of the representativeness of areas and the proper distribution of sampling stations.
  • Micro-implementation studies: Review of the specific location of each station to ensure compliance with the required technical criteria.
  • Determination of the minimum number of sampling points and their types (traffic, industrial, urban/rural background), tailored to the characteristics of each area.
  • Use of passive samplers as a complementary tool for better characterization of the area and precise preliminary assessment.
  • Review and optimization of existing networks to maximize efficiency and ensure regulatory compliance.
  • Technical reports and documentation to justify decisions before the relevant authorities.

Odour impact assessment

The impact of odours generated by various activities is a recurring issue in urban and industrial areas, and their measurement is not always straightforward. At 4sfera, we offer effective solutions to help local authorities monitor odour-generating activities and ensure that air quality levels remain within legislative standards.

We conduct monitoring studies at various locations to assess air quality and the presence of odours, using devices that measure volatile organic compounds (VOCs), H2S, and particulate matter. We combine this data with meteorological information to provide a comprehensive assessment of the situation. Additionally, we design customised monitoring networks for each municipality and offer advice on odour management in urban environments, always ensuring compliance with local and international air quality regulations.

Meteo

4sfera offers the service of installing meteorological stations to collect real-time data on atmospheric conditions in various environments. These stations are useful for complementing environmental studies and providing meteorological information in spaces such as ports, municipalities, industrial areas, or any other location where accurate data is required.

Our stations can measure parameters such as:

      • Wind speed and direction
      • Temperature and relative humidity
      • Atmospheric pressure
      • Solar radiation and precipitation

These systems help improve safety and management in areas where meteorological conditions are a key factor, such as in port infrastructures, airports, urban areas, or natural spaces.

With 4sfera, you ensure reliable meteorological monitoring, advanced technology, and specialised technical support.

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Privacy Policy

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We are in compliance with the requirements of COPPA (Childrens Online Privacy Protection Act), we do not collect any information from anyone under 13 years of age. Our website, products and services are all directed to people who are at least 13 years old or older.

Updating your personal information

We offer a ‘My details’ page (also known as Dashboard), where you can update your personal information at any time, and change your marketing preferences. You can get to this page from most pages on the site – simply click on the ‘My details’ link at the top of the screen when you are signed in.

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This online privacy policy applies only to information collected through our website and not to information collected offline.

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Changes to our Privacy Policy

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