Features 1、High Quality Material: The pH tester is made of ABS material, which is sturdy and durable to ensure a long service life. 2、Accurate Measurement: The high accuracy pH tester is easy to operate and fully meets the testing needs of various industries. 3、Large Screen Display: High resolution and accuracy, convenient reading, fast and accurate, and applicability in the field. 4、Waterproof: The waterproof grade of the waterproof pocket test pen is IP65, which is suitable for use in high humidity environments. 5、Application: Widely used in drinking water monitoring, water regulation, reverse osmosis, laboratories, agriculture, aquaculture and aquariums. Specification Item Type: PH Tester Model: PH-035L Material: ABS Battery: 4 x LR44 Battery(Not Included) Basic Parameters: Range: PH: 0.00~14.00PH Temperature: 0℃~50℃ (32~122℉) Uses: Tap Water Household Water Purifier Commercial Water Purifier Industrial Water Treatment Industry, etc Application: Widely Used in Drinking Water Monitoring, Water Regulation, Reverse Osmosis, Cooling Towers, Wastewater, Laboratories, Agriculture, Aquaculture and Aquariums, Hydroponics and Printing Industry, and Beauty Industry Package List 1 x Detection Pen 1 x Electrode 1 x Screwdriver 1 x Manual 1 x Plastic Box