This modified midget impinger is used for sampling small air volumes at a low jet velocity

Bottle has top [ST] 24/40 outer joint tooled with reinforcement rings for added strength and stability. Tube is modified with [SJ] 12/5 joints, both vertical (use 89060-252 pinch clamp). The out [SJ] Joint is 12/5 Ball. Nozzle is calibrated to deliver 0.09 to 0.11 CFM at 30.5 cm H₂O vacuum. Bottle is graduated 0 to 25 mL in 5 mL divisions. Fabricated from borosilicate glass.