Oyster PH/Mv/Temp Meter w/Case Application Measures pH Orp And Temperature Features Oyster Design For Lab Or Field Use 25 Memory Locations Min/Max Mode 5 Point Buffer Recognition For Use With Needs An Optional Rtd Probe To Measure Temperature Includes Neckstrap 9V Battery Ph Electrode Sample Buffers And Carrying Case Manufacturers Warranty Length 1 Year Meter 6 Months Electrodes