Arduino library for pH and ORP/Redox measurements with non-blocking operation, two-point calibration, and error detection. Features configurable sampling, rolling averages, and range validation (pH 0-14, ORP 0-1000mV). Compatible with any pH/ORP analog circuits using ADS1015. No external dependencies besides Wire.h.

Study of a model to evaluate potability of water samples.

swtpc provides support in the planning, construction, operation and maintenance of low-tech drinking water treatment plants.