Digital TDS Water Quality TDS Tester 0-9999 PPM Measurement Range 1 PPM Resolution xobw Features : Economy model that is great for end-users: Highly efficient and accurate due to its advanced microprocessor technology. Hold function: Saves measurements for convenient reading and recording and battery life is approx. Display: Large and easy-to-read LCD screen. Measurement range: 0-9999 ppm. From 0-9999 ppm, the resolution is in increments of 1ppm. Can detect three types of impurities in water: soluble salt impurities-calciums ions, magnesiums ions, etc.; ionic organics-sodium acetate, sodium sulfate, etc.; heavy metal ions-chromium, zinc, lead, copper, etc. (Note: The lower the TDS measurement value, the purer the water quality) Specification: Size: 150*16*16mm Measurement accuracy: 0-9999PPM Temperature range: 0-80 degrees Celsius Weight: 28g 1 x TDS Water Quality Tester(built-in button battery) We Ship to Worldwide (Except some countries and APO/FPO). We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address. Orders processed timely after the payment verification. We will send the package from China via air post. Delivery time depends on Shipping Carrier, Customs and Post Dispatch of destination and other factors.Most packages could be received in 20 business days (4 weeks). See below for delivery time collection of quantitative data: We accept Email requests for returns within 7 working days of receiving your order. If the item is in your possession more than 7 days, it is considered used and we will not issue you a refund or replacement. If you are not satisfied when you receive the item, please return it within 7 days for a replacement or money back. Please contact us for a return guide before you return it. All returned items MUST BE in the original packaging and you MUST PROVIDE us with the shipping tracking number, specific reason for the return, and your order ID. If the item is defective in 3 months, We will send you a replacement without extra charge, or offer refund after we receive the defective item. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item. But you need pay the extra shipping fee. You agree to all of the above-listed policies upon ordering on ! If you are satisfied with our product and service, please give us a positive feedback with 5 star review which is very important for us. We will be very appreciate if you can leave your real feeling here. If you are not satisfied with the items or our service, please contact us before leaving any feedbacks, we will resolve the issue immediately, thank you! Please Message us from 9:00am. to 18:00pm. (GMT+8) of Monday to Saturday . If you have any questions, please message us and give us a chance to assist you. All messages will be answered within 1 business day (except Public holidays in China). If you do not receive our reply, please kindly re-sent your message and we will reply to you as soon as possible. We apologize for the late reply during holidays (included Sundays).