LOAC (Light Optical Aerosol Counter)
Project funded by the French National Research Agency (ANR) 
Collaboration between national research laboratories (LPC2E, LSCE/CEA, LA), private companies (ENVEA, MeteoModem, Aerophile SAS), and the French Space Agency (CNES) CNES 
150 copies produced at the end of 2018 
More than 150 flights under different kinds of balloons at the end of 2018