Figure 10 | Scientific Reports

Figure 10

From: The pursuit of further miniaturization of screen printed micro paper-based analytical devices utilizing controlled penetration towards optimized channel patterning

Figure 10

(a) pH testing using bromothymol blue as pH indicator and screen-printed channels of approximately 300 μm width (scale bar: 2 mm). (b) Determination of calibration curve based on normalized grayscale intensity corresponding to pH values ranging from 5 to 5. Each point represents the average grayscale intensity with n = 4. The tables display the corresponding data used to estimate the measurement resolution of the device.

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