Product DescriptionDigital Pocket Meter Water Tester Pen LCD Monitor Pool Aquarium Laboratory Digital Pocket TDS TEMP Meter Water Tester Pen LCD Monitor Pool AquariumDescriptionThis is a Digital TDS Meter Tester, For Test the Filter Water Quality Purity, Check the performance of your water filter, Check for hardness (1grain=17ppm), Make sureyou always drink pure water! Features1. 100% Brand new and high quality2. This item can be used in: water purifiers and filters, food (vegetable, fruits) & drink quality monitoring, pools and spas, aquariums, hydroponics3. Hold function: Saves measurements for convenient reading and recording4. Auto-off function: Turns off meter after 10 minutes of non-use to conserve batteries5. 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, Factorycalibrated6. Rang: 0-9990ppm7. Accuracy: +/-2%8. Battery: 2 x 1.5V Button Cell battery (not included)9. Item size:155mm x 31mm x 21mmNote: Do not drop the entire TDS meter in water of dip beyond the maximum immersion level. This unit is not water-tight and is not covered under the warranty if waterenters the unit.Package Included:1 x TDS Meter Tester1 x User Manual1 x Original Leather Case -SHIPPING- Item will be shipped within 24 -48 hours after full payment is received. The Item will be shipped by air mail，Normally the shippment to worldwide is used to take 20 to 40 business days, exclude Sat & Sun. -PAYMENT- We accept PayPal only. Payment must be received in 7 business days of product closing. . -WARRANTY- If the item is defect when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition. Please contact us and double check the return address before you return it. If is item is defective in 3 months, you can return it to us. We will send you a new replacement after receiving the defective item. -CONTACT US- If you have any questions, please feel free to email our service specialists 24 Hours a Day, 7 Days a Week, and we will reply you ASAP. If no response within 24 Hours, please check the spam of mail box or kindly re-send it to us. We greatly appreciate your POSITIVE feedback. Please do NOT leave negative or neutral feedback without any contact. If you haven't received item