Skip to main content
. 2022 Jul 19;19(14):8789. doi: 10.3390/ijerph19148789

Figure 2.

Figure 2

Physico-chemical parameters measured using Hanna multiprobe (hi-98194) during sample collection. The ranges of the specific parameters measured and the accuracy of measurements are indicated in the following: (a) pH is 0.00 to 14.00 pH with a resolution of 0.01 pH, accuracy of ±0.02 pH, (b) Oxidation-Reduction Potential (ORP) values are ±2000.0 mV with a resolution of 0.1 mV, accuracy of ±1.0 mV, (c) salinities within 0.00 to 70.00 PSU with a resolution of 0.01 PSU, accuracy of ±2% of reading or ±0.01 PSU whichever is greater, (d) temperature is from −5.00 to 55.00 °C with a resolution of 0.01 °C, accuracy of ±0.15 °C, and (e) the Total Dissolved Solids (TDS) is 0 to 400,000 ppm (mg/L), with the maximum value depending on the TDS factor, which was set automatic ppt (g/L), accuracy of ±1% of reading or ±1 ppm (mg/L) whichever is greater.