The Stoffencheck app, developed by Rijksoverheid, is an Android application that provides extensive information on hazardous substances in the workplace. The app explains the risks associated with working with certain substances, and provides measures that can be taken to ensure safe working conditions.

The app offers a detailed explanation of pictograms that are often found on packaging, and provides an overview of H and P phrases, limit values of substances, and the ten most dangerous substances. It also offers five rules of thumb for first aid in the event of accidents with hazardous substances, and tips for recognizing hazards and minimizing risks.

Overall, the Stoffencheck app offers an easy-to-use and comprehensive guide to working with hazardous substances. It is an excellent resource for anyone working in an environment where hazardous substances are present.