Table 3 Prediction of hardness values in water samples by the PLS model, from UV-vis spectra measurements, using EBT-CC
From: Low-cost, disposable colourimetric sensors for metal ions detection
Hardness (°F) | Fit PLS (°F) | e% | |
|---|---|---|---|
Tap water | 13.5 | 11.5 | − 14.8 |
SANGEMINI water diluted 2 times | 43.5 | 47.6 | 9.4 |
SANGEMINI water diluted 4 times | 21.9 | 23.1 | 5.4 |