Cartagena de Indias, after improving its wastewater treatment, faced unintended consequences such as increased gas production and offensive odors.

   To address this, the city implemented a continuous improvement strategy, including a monitoring system for odor and H₂S concentrations, allowing for better prevention, control, and reduction of odors affecting the community.

J. Zapata*, J.Cortes, V. Florián.

   Olfasense GmbH has officially opened the registration for its 2025 Proficiency Test (PT), inviting olfactometric laboratories worldwide to participate. The PT, accredited since 2005, offers laboratories the opportunity to assess their performance in accordance with the criteria set out in EN 13725:2022, a key standard for laboratories maintaining ISO 17025 accreditation. This proficiency test plays an essential role in confirming that laboratories meet international standards for olfactometric measurements.

   The 2025 PT is specifically designed to help laboratories verify their compliance with the critical performance criteria of EN 13725:2022, focusing on precision under repeatability conditions and accuracy for 1-butanol. These parameters are fundamental for evaluating the reliability and precision of olfactometric measurements. The proficiency test is an important tool for laboratories to benchmark their performance and ensure they meet the necessary industry standards.