The SafeDip is a digital chemistry reader designed to make measuring pool parameters easy. Until now, other products which claimed to be similar really didn’t give the user the ability to measure so many parameters which such accuracy. The SafeDip doesn’t require any test strips to work. Simply collect the water sample from the pool or spa using the onboard cup and press the Start button to take your measurement. It’s smart, simple, and gives you results in seconds. Large digital LCD display Easy push- buttonsp pH probe-replaceable in seconds Measures pH, Salt, TDS, ORP, Temp and CL Memory function automatically stores the previous measurement for easy comparison Can be used on many types of water including pools, spas and ponds Water Resistant Housing Warranty: 90 days Requires two AAA batteries (included) See It In Action Manual / Instructions for SafeDip Digital Pool Testing & Water Chemistry Reader SafeDip Manual PDF Technical Testing Specifications Operating range: 41-122°F(5-50°C), 0-12 pH, 0999mV(ORP), 200-9800ppm(Salt and TDS) Temperature sensor-resolution: 1°C; Accuracy: +/-5%(~±1°C), Selectable °C/°F system ORP sensor-resolution: 1mV; Accuracy: ±50mV(500~800mV) TDS and SALT-resolution: 100 ppm; Accuracy:±100pppm(200~5000ppm) Replaceable pH sensor-resolution: 0.1 pH Replacement pH Sensor is MET20A-040 1 point pH calibration using 7.00 standard buffer Automatic temperature compensation for pH and salt