Kit,Calibration pHTestr 30 Calibration Kit Includes Testr, Singles Calibration Pouches (Two Each of pH 4.01, 7.00, 10.00 and Rinse Water) Sample Jar, and Sturdy Carrying Case

• Unique double junction electrode design and increased reference gel volume
• Waterproof, dustproof housing
• Replaceable electrode
• Push-button calibration with auto-buffer recognition
• Automatomatic temperature compensation
• Self-diagnostic error messages
• Hold function and auto-off function