The Stoffenmanager Nano is a generic online tool that is freely available via www.stoffenmanager.nl. It is  designed as a tool for SMEs to rank potential health risks occurring as a result of exposure to MNO at the workplace and to find effective risk management measures to manage these risks. It is a tool to put the precautionary principle into practice. Stoffenmanager Nano is funded by the Ministry of Social Affairs and Employment and developed by ECTS (Arbo Unie), TNO and BECO.

Stoffenmanager Nano applies to manufactured nano-objects (MNO) that meet all of the following criteria:

• Particles are not (water) soluble, and;
• The particles are purposely (synthetically) produced and not released as unintentional by-product, such as the particle production as a result of incomplete combustion processes, and 
• The size of the primary particle is smaller than 100 nm and / or the specific surface area of a nanopowder is larger than 60 m²/g
• It concerns single particles as well as agglomerates or aggregates.

The risks of working with nanoparticles can at this moment only be assessed in a qualitative manner via the control banding method. Hazardous properties of the nanomaterial are classified based on parameters like classification nanomaterial / parent material, structure (fiber like properties) and primairy particle size.

The exposure model is based on the generic Stoffenmanager 4.5 with some nano specific adjustments. 

Scientific background: 'Stoffenmanager Nano version 1.0: a web-based tool for risk prioritization of airborne manufactured nano objects'. Ann. Occup. Hyg. 01-2012.  

For more information please visit www.stoffenmanager.nl or contact Henri Heussen (Henri.heussen@arbounie.nl / +316-5250 1196) or Koen Verbist (koen.verbist@arbounie.nl / +316-5250 0028).