Featuring the largest visual indicator available, the CO2 Easy is ideally mounted up front where clinicians and first responders can effectively view critical carbon dioxide levels without looking away from the patient. The nontoxic, pH sensitive indicator uses familiar purple to-yellow color conversion when CO2 is exhaled. Built in bacterial filter protects both patient and clinician.C02 Easy for patients weighing 33lbs. or above.Pedi C02 Easy for patients weighing 2.2 - 33lbs 3 year shelf life.Designed for fast, easy airway assessment.Verifies proper endotracheal tube placement.Helps prevent unwarranted intubations.Confirms cardiac output during CPR.Expansive ; Diameter Visual Indicator makes rapid breath-to-breath response easy to seeAnti-fogging agent reduces susceptibility to moisture and humidity, while ensuring continuous lens clarity.Complies with Standard of Care Guidelines from the American Heart Association, American College of Emergency Physicians, American Association for Respiratory Care and the American Society of Anesthesiologists