This transparent 20cc mucus trap is graduated in 2cc increments for easy measurement of the collected sample. An extra snap-on cap allows the safe transportation of samples. Catheter has 2 side eyes sized for maximal suction. Frosted finish for smooth insertion and secretion removal and a forward-placed Contro-Vac valve for minimized mucus spray-back. Single-loop flexible packaging with easy-peel package minimizes storage space.