From invention to research collaboration all the way to commercialization, Access Sensor Technologies, LLC (AST), will share how the On-TargetTM water testing cards came to be one of AST’s cutting-edge technologies. Funded by the National Science Foundation and developed in collaboration with Colorado State University, the On-TargetTM water test card technology provides an improved method for rapid, quantitative, on-site testing for contaminants in water.The On-TargetTM water test cards takes advantage of colorimetric chemistries that, when exposed to a specific analyte, form an easily visible color change. Other water test kits on the market rely on determining the hue of a color change, which can be difficult for the user to interpret. To solve this problem, On-TargetTM technology takes colorimetry even further and instead, the user simply measures the diameter of the color change circle that forms. This makes the testing more quantitative and provides a great user experience without power or external reading equipment. The compact On-TargetTM design makes them ideal for transportation into the field for on-site testing and their simplicity makes them ideal for people of diverse scientific and water testing backgrounds to obtain reliable results in minutes, without training. The On-TargetTM water test cards allow for detection of Cd2+, Cu2+, Fe2+/Fe3+, Mn2+, and Zn2+ down to 0.5 ppm and up to 100 ppm levels. The results obtained from the On-TargetTM technology are agreeable with results from “gold standard” methods including flame atomic absorption spectroscopy and inductively coupled plasma mass spectrometry. The test cards are safe to use, do not generate any hazardous waste, use an order-of-magnitude less reagents than lab tests, and provide results within three minutes.

Evolution of access sensor technologies, LLC and the on-targetTM water test cards

2019 Fall National Meeting

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