Fig. 7. A comparison of SBR determination using (a) a UV light box combined with mobile phone image acquisition compared to (b) a commercial LFReader system. The dipstick-LFI assay format was used to generate test strips containing Pdots of PDOF (closed blue circles), CN-PPV (closed red circles) and PDOF–CN-PPV blends (blue-red circles). (c) Representative images of the test strips used for image analysis are presented below for visual comparison.