The membranes of your breast pump work with the valves to help with the suction and the flow of milk into the collection bottle when pumping. Keeping them in good shape or replacing when necessary is key. Depending on how frequently you pump, consider replacing every 4 to 12 weeks.
Compatible Breast Pump(s): Medela Sonata
Authentic Medela Pump Parts/Medela Sonata Membranes
|Manufacturer Part Number||101032534|