The Gas Pressure Sensor can be used to monitor pressure changes in a gas. The range is wide enough to perform Boyles law yet it is sensitive enough to conduct vapor-pressure or pressure-temperature experiments. Teachers can use the Gas Pressure Sensor to monitor transpiration or respiration in an enclosed environment. Included are: Vernier Gas Pressure Sensor 2 Tapered valve connectors inserted into a No. 5 stopper 1 Tapered valve connector inserted into a No. 1 stopper 1 Two-way valve 18 inch Tygon tubing with Luer Lock connectors 20 mL syringe 2 White transpiration tubing clamps Instruction Manual **This item requires the use of a LabQuest computer interface which is also available for checkout.