How to use - The rise of sap
After one to two days, small blue traces confirm that the water has risen to the top!
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Do-it-yourSciences, a realization of the Juvene Foundation in collaboration with the Espace des Inventions
The development has been supported by Info-Energie (campagne vaudoise d'information dans les écoles) and by SIG (Services Industriels de Genève).
