Aquapak Kit, Humidifier Adaptor, Sterile Water, 340mL, 20/CSUOM: 20 per case AquaPak Bubble Prefilled Humidifier Kit with Adapter HUD00040 and 340 mL Sterile Water Reservoir Supplied with a sterile water reservoir bottle Microdiffuser produces small bubbles and surface agitation for quiet operation and high humidity output Humidifier Adapter HUD00040, included on some models and also sold separately, incorporates an audible alarm to alert clinicians to flow restriction or occlusion of humidifier or tubing