Digital TDS Meter Tester Features : 1.This item can be used in : water purifiers and filters, food (vegetable, fruits) & drink quality monitoring, pools and spas, aquariums, hydroponics. 2.Hold function : Saves measurements for convenient reading and recording 3.Auto-off function : Turns off meter after 10 minutes of non-use to conserve batteries 4.Dual Range : Measures form 0-999ppm, with a resolution of 1ppm. From 1,000 to 9,990ppm, the resolution is 10ppm, indicated by drinking x 10image, Factory calibrated Spec : 1.Color :white 2.Accuracy : /-2% 3.Weight : 68g 4..Rang :0-9990ppm 5.Item size :155mm x 28mm x 15mm Note : 1. Do not drop the entire TDS meter in water of dip beyond the maximum immersion level. 2. Dip only the electrode part in the solution. Do not submerge the whole TDS&EC meter into the test solution to avoid spoiling the circuit board. Standard References 0-100 ppm ——- Ideal drinking water 100-500 ppm—— Acceptable tap water Above 500 ppm— Poor state TDS Water Hardness Standard 0-89 ppm ——— 0-4 dh (strong soft water) 90-159 ppm —— 5-8 dh (soft water) 160-229 ppm —– 9-12 dh (moderate hard water) 230-339 ppm —– 13-18 dh (middle hard water) 340-534 ppm ——19-30 dh (hard water) Above 535 ppm — Above 30 dh (strong hard water) Packing List : x1 unit TDS & EC x1 unit case x1 unit cell
