Table 5.

Comparison with existing sensors in the market.

Ref.	Description	Measured Parameter	Measured Range	Sensitivity (%)	Price (EUR)
[52]	Handheld equipment	Turbidity (NTUs)	0–1000	2%	2813.00
[53]	Probe	Turbidity (NTUs)	0–4000	1%	N.I.
[54]	Handheld equipment	Turbidity (NTUs)	0–1000	2%	1670.71
[55]	Probe	Turbidity (FTUs)	0–1250	2%	N.I.
[56]	Handheld equipment	Turbidity (NTUs)	0–1100	2%	2020
Our	Handheld equipment and probe	TSS (mg/L)	0–1500	0.7%	<100
[57]	Handheld equipment	Conductivity (mS/cm)	0–400	1%	795
[58]	Probe	Salinity (ppt)	0–48	2%	979.00
[59]	Probe	Conductivity (mS/cm)	0–650	5%	N.I.
[60]	Probe	Conductivity (mS/cm)	0–200	N.I.	N.I.
Our	Handheld equipment and probe	Salinity (ppt)	0–35	0.94%	<100