Single use, disposable Serres suction liner (1 litre capacity) for use with converted Laerdal suction units only. Made from tough, polyethylene material and featuring ultrasonically welded seams. Key product features: Tethered cap - quick and secure closure after use Single patient connector - eliminates the risk of misconnection, and allows for quick, safe liner changes Dual purpose filter - offering bacterial filtration and fluid overflow protection Fold flat design - reduces storage space Serial port - create cascade connections from one liner to the next, or use it to add a coagulant ***This liner is only compatible with Laerdal suction units. The suction unit must have been converted with a converter kit first***