A low-cost, high-sensitivity 3D printed fluorescence detector.

Fluorescence methods have distinct advantages over traditional absorbance methods including greater sensitivity, improved detection limits, and selectivity. Unfortunately, the cost of typical, commercially available fluorescence detectors is beyond what some industrial and research laboratories can afford or maintain. Having a relatively low-cost, simple to use, and high-sensitivity fluorescence detector would be very beneficial.

A low-cost automated titration system for colorimetric endpoint detection.

An auto titrator system was developed to accurately and precisely detect colorimetric endpoints for spectrochemical titrations. This system was constructed using inexpensive components such as a Raspberry Pi® single-board computer, 3D-printed components, and a commercially available spectral sensor. The auto titrator was evaluated by performing a standard method for determination of water hardness.