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A smartphone fluorometer – the lab-in-a-phone

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Abstract

We report the first contained portable field fluorometer using a smartphone and a 3D printed sample holder. The white optical source used for camera and torch applications is filtered to enable blue excitation of a customised dye which fluoresces green as a function of pH. The green intensity is measured using an RGB app. Field measurements of water pH around Sydney are compared with laboratory results.

© 2014 Optical Society of America

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