Applications Water Quality Testing: For analyzing water in pools and spas, lithographic processes, boiler and cooling tower water analysis and all types of quality assurance and water quality testing. Environmental/Agricultural: Use in ecology studies, aquariums, aquaculture and nutrients levels in hydroponics. Educational: Ideal for quick, accurate checks in laboratories and schools. Specifications Product Specification Description pH Range 0.00 to 14.00 pH Resolution & Accuracy 0.01 pH & ± 0.01 pH Temperature Range 0 to 100.0 °C Resolution & Accuracy 0.1 °C & ± 0.5 °C mV Range Not available Resolution & Accuracy - Temperature Compensation Automatic / Manual (0 to 100 °C) No. of Calibration Points 2 to 5 points pH Buffer Options 1.68, 4.01, 7.00, 10.01, 12.45 (USA)1.68, 4.01, 6.86, 9.18, 12.45 (NIST)4.10, 6.97 (Pb) Special Functions Auto Power-Off after 17 minutes; Hold & Self-diagnostic messages Power 4 'AAA' x 1.4V batteries Order Information Product Features :: Multi-Point Calibration (up to 5 points) with Auto-Buffer Recognition - choice of USA, NIST or pure water buffer standards with ±0.01 pH accuracy :: Automatic Temperature Compensation (ATC) for the highest accuracy under fluctuating temperatures :: Hold Function momentarily freezes reading for easy viewing and recording :: Auto-Power Off saves battery power after non-use :: Self-Diagnostic with message codes for easy troubleshooting :: Large Custom LCD provides optimum viewing even at a distance :: Protective Rubber Boot shields meter from accidental knocks and features a sturdy built-in stand for easy bench-top operation :: Rugged Carrying Case (Optional) provides handy on-site meter calibration and measurement