Plastic tube with purple flip cap. Hollow fibers inside tube filters contaminants from water. Purple string attached to one end of tube.

LifeStraw is a personal and mobile water purification tool developed as a…

A: Blue plastic funnel with B: cap used to hold filter paper. Funnel is designed to fit on two 2-liter soda bottles (with cap on) or on the top of a jerrycan (without cap).

In 2016 Dr. Theresa Dankovish's company,…