Waterproof Large Screen pH Tester Model: pH Testr 20 No. PHTEST20

Product Features : : Large Display Screen - dual display LCD for enhanced readability, provides comprehensive meter information : : Waterproof, Dustproof Housing - IP67 rated, maintains the integrity of your tester even in harsh conditions. Plus it floats! : : User-Replaceable Sensor - reuse the same meter body many times : : Double Junction Sensor offers longer lasting usage : : Push-Button Calibration with Auto-Buffer Recognition - quick, easy calibration with no calibration mistakes : : Choice of USA or NIST pH buffer standards with up to 3 points : : Auto-Power Off saves battery power after non-use : : Hold Function freezes reading momentarily for easy viewing : : Self-Diagnostic for easy troubleshooting ( e.g battery indicator, message codes) : : Enhanced power saving allows extended power consumption up to 500 hrs with single battery set Product Specification Description pH Range -1.0 to 15.0 pH Resolution 0.01 pH Accuracy ± 0.01 pH No. of Calibration Points 3 points pH Buffer Options USA - pH 4.01, 7.00, 10.01; NIST - pH 4.01, 6.86, 9.18 LCD Display Dual display with battery indicator, error messages/ codes ATC Yes Special Functions Large Dual Custom Display, Self-diagnostic; Hold function; Auto-Power Off after 8.5 minutes Power 4 x 1.5V alkaline button cell batteries; > 500 hrs