The Myron L Ultrapen PT2 pH & Temperature Pen is designed to be extremely accurate, fast and simple to use in diverse water quality applications. Advanced features include automatic temperature compensation; highly stable microprocessor-based circuitry; user-intuitive design; and waterproof housing. A true one-handed instrument, the PT2 is easy to calibrate and easy to use. To take a measurement, you simply push a button then dip the pen in solution. Results display in seconds. HIGH PERFORMANCE FEATURES Accuracy of ±0.01 pH 1, 2 and 3 Point Calibration Proprietary Sensor Design Automatic temperature compensation Reliable Repeatable Results Rugged, reliable, shock-resistant fully encapsulated electronics Durable body constructed of aircraft aluminum Simple one button function High capacity N-type battery included Waterproof APPLICATIONS Agriculture Hydroponics Desalination Aquaculture Pharmaceutical Boilers and Cooling Towers Fountain Solutions for Printing Horticulture Wastewater Pool and Spa Food and Beverage Irrigation Reverse Osmosis Plus Many More! SPECIFICATIONS pH Temperature Range: 0.00-14.00 pH 0 - 71° C / 32 - 160° F Accuracy: ± 0.01 pH (After Wet Calibration) ± 0.1 ºC / ± 0.1 ºF Repeatability: ± 0.01 ± 0.1 ºC / ± 0.1 ºF Resolution: 0.01 pH 0.1 ºC / 0.1 ºF Time to Reading Stabilization: 10-30 seconds Power Consumption: Active Mode 37 mA, Sleep Mode 2 µA Temperature Compensation: Automatic to 25ºC Physical Dimensions: 17.15 cm L x 1.59 cm D or 6.75 in. L x .625 in. D Weight: 54 g/1.9 oz. (without soaker cap and lanyard) Case Material: Anodized Aircraft Aluminum with Protective Coating Battery Type: N type, Alkaline, 1.5V Calibration Solutions: pH 4, pH 7, pH 10 Operating/Storage Temperature: 0 - 55ºC or 32 - 131ºF Enclosure Ratings: IP67 and NEMA 6 EN61236-1: 2006