Our precision syringes are available as a simple 3-L or a valved 1-L type. The 3-L precision syringe is for all spirometers as required by ISO 26782:2009. It can be used with flow or volume sensor systems and can be used with any manufacturers’ equipment. A range of adaptors are available. The 1-L Precision Syringe is for linearity checking volume displacement spirometers.