Practical sessions in the Pharmacy Degree at the Universitat de Barcelona are held in a centralized laboratory system, the Teaching Laboratory Unit (ULD), in which an integrated Quality management system (QS) has been implemented. The ULD is responsible for maintaining the laboratories, providing equipment, and managing the laboratory waste generated during practical sessions. This environment provides a valuable context for students to develop transversal knowledge and skills related to Quality, Health, Safety, Security, and Environment. Despite the structured system, quality indicators revealed that students frequently mishandled laboratory waste, indicating a gap in the assimilation of essential safety and environmental procedures, a key learning outcome of the program. To address this issue, we developed a free pedagogical mobile application (RESIDUS ULD-UB) containing a comprehensive list of waste types and the corresponding disposal procedures for chemicals and general laboratory materials (gloves, bench-top paper, glassware, plasticware, etc.) generated in each course. First, we created a database of all waste items, distinguishing whether they were potentially contaminated or not, and specifying the appropriate containers. This database was reviewed by the Safety, Health, and Environment Office (OSSMA) at the Universitat de Barcelona. The application was built using Glideapps, and to install it on a mobile device, users simply need to visit https://residus-uld.glide.page and follow the on-screen instructions. One of the main advantages of this system is that changes in waste disposal guidelines established by OSSMA can be incorporated quickly. Moreover, the app facilitates the identification of the types of waste most frequently consulted by students, thereby allowing targeted emphasis to be placed on these areas. Preliminary results suggest that the app contributes to a more consistent application of proper waste disposal practices, reduces environmental impact and disposal costs, and enhances students’ engagement with transversal learning objectives.

Keywords: Chemical waste, practical sessions, SDG (3, 4, and 13), App.