Why are test strips manufactured by ITS superior? Its a question we are asked often. Our test strips combine sensitivity and safety. That’s how SenSafe™ test strips got their name. What makes them unique is the patented aperture (window) technology. This unique design allows for the lowest sensitivity possible on a test strip. SenSafe™ test strips, when dipped in a water sample with a back and forth motion, allow the aqueous solution to pass through the thin color indicator chemical impregnated membrane. Coupled with this design is another feature that is unique: the SenSafe™ test strips only contains 1/100th the amount of chemical compared to most commonly used 10 mL colorimeter tests. We strive to make our tests environmently friendly and accurate.