Peace, mercy, and blessings of God be upon you. Add me to see my offers. A device to measure water salinity and temperature TDS (three digits) meaning it measures up to 999. It is used to measure the salinity of filtered drinking water, and measure the salinity of water in fish tanks, and measure the salinity of water used for irrigation of crops. The device is new. Address: Al-Qassim - Buraidah - Al-Qurtubah district. Contact WhatsApp: ( ( Mobile number appears when you press the contact button ) ) Delivery throughout the Kingdom for 25 riyals.