On February 19, 2021, the European Union (EU) Observatory for Nanomaterials (EUON) published a Nanopinion entitled “eREACHNano helps you to register nanoforms under REACH” by Dorte Rasmussen, Ph.D., who has been working on the exposure and risk assessment of chemicals at DHI A/S for almost 25 years.  Rasmussen describes eREACHNano, a tool developed to explain Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) regulation requirements for nanoforms.  According to Rasmussen, eREACHNano guides companies through the registration process for nanoforms and the registration requirements using e-learning modules developed through the eREACHNano project by DHI A/S in cooperation with the N-Nano project group, a working group of the Nordic Council of Ministers.  Rasmussen states that eREACHNano provides an introduction to nanoforms, describing the main elements of REACH, its actors, and their roles and responsibilities.  The tool places extra emphasis on describing the documentation on safe use and explaining where the distinction between bulk chemicals and nanoforms should be made.  Rasmussen notes that eREACHNano focuses on — but is not limited to — helping small- and medium-sized companies that may not have sufficient in-house expertise on regulations that cover nanomaterials.