Product#: TG-5755 Availability: This item normally ships within 1 - 2 business days. Description: 45/50 joints on both the 500ml capacity bottle and the dispersion tube, or stopper. Please specify with or without deflection plate. High velocity impinger used in the determination of dust concentration in air or other noncondensable gases, as per EPA Method 5. Used in an impinger train to collect gases and particles from the air. Center tube sits 1/2” off the bottom of the impinger bottle and has an I.D. of 13 mm. Bottle capacity is 500 ml.