... treatment, cosmetics, wine, home, office, travelling and more. DisplayLCD, 34mm x 17mmVoltageCR2032 Battery, DC3VMeasure rangeTDS0 ~ 9999 ppmElectrical conductivity0 ~ 9999 ... of TDS is an indicator of potential concerns, and warrants further investigation. Most often, high levels of ... for TDS to ensure the filters and/or membranes are effectively removing unwanted particles and bacteria from your water. ...