pH Pen, Single Line LCD

pH Pen, pH Range 0.00 to 14.00, Waterproof IP67, Operating Temp. Range (F) 50 Degrees to 104 Degrees , Operating Temp. Range (C) 10 Degrees to 40 Degrees , Display Single Line LCD, Auto Power Off Yes, Power Source (4) 1.5V Micro Alkaline Batteries, Manufacturers Warranty Length 1 yr., Range 0.00 to 14.00, Number of Tests 0