B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
B05B11/1001—Piston pumps
B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
Procede et appareil de depot d'une couche d'echantillon liquide a la surface d'un liquide support contenu dans un tube de centrifugation semi-ferme.
Dispositif pour la fluidification de materiaux granulaires, conteneur muni d ' un tel dispositif et procede de decolmatage de materiaux granulaires contenus dans un conteneur