Designed for areas involved in gas/air handling and dispensing. Suitable for EPA gas sampling, stack and air sampling, and the calibration of medical equipment such as respirators and spirometers to satisfy OSHA requirements. Unique features include clear graduations that provide fast and accurate readings. Clear acrylic plastic barrel makes syringe lightweight and ideal for field use. O-ring gas seal ensures syringe is gas tight. Septum sampling port makes small volume sampling and the addition of internal standards easy. Detachable plunger stem makes storage easy. 7/16 in. UNEF threaded ports allow connection to a range of fittings.