Misc Vendor MET20A Digital Test Meter, Solaxx SafeDip, 6 in 1The Safedip is a digital chemistry reader designed to make measuring pool parameters easy. 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. FEATURES: Large digital LCD display Easy to push buttons pH probe is replaceable in seconds Measures pH,salt content, TDS, ORP, CL and water temperature Memory function automatically stores the previous measurement for easy comparison Can be used on many types of water including pools, spas and ponds