Instruction Manual pH 5+, pH 6+, Ion 6+-17-7. SPECIFICATIONSModel pH 5+ pH 6+ Ion 6+Ion Range 0.01 to 1999 ppm 3Resolution0.01 ppm for 0.01 to 0.99 ppm; 0.1ppm for 1.0 to 199.9 ppm; 1 ppmfor 200 to 1999 ppm3Accuracy +/- 1% of reading 3No. of Calibration Pts 2 to 3 points (minimum 2 pts) 3pH Range 0.00 to 14.00 pH 3 3 3Resolution 0.01 pH 3 3 3Accuracy +/- 0.01 pH 3 3 3pH Slope Range 80 to 120% 3 3 3No. of Calibration Pts 1 to 3 points (push-button) 3 3 3Buffer OptionspH 4.01, 7.00, 10.01 (USA)pH 4.01, 6.86, 9.18 (NIST)pH 4.10, 6.97 (Pb)3 3 3Temperature Range 0.0 to 100.0 oC 3 3 3Resolution 0.1 oC 3 3 3Accuracy +/- 0.5 oC 3 3 3Temperature Comp. Automatic / Manual (0 to 100 oC) 3 3 3Millivolt Range -1000 to +1000 mV 3Resolution 1 mV 3Accuracy +/- 2 mV 3Millivolt Range -500 to 500 mV 3Resolution 0.1 mV for –200 to 200 mV;1 mV for 200 to 500 mV 3Accuracy +/- 0.2 and 2 mV resp. 3FeaturesAuto-BufferRecognition YesHold Function “HO”Auto Shut Off After 17 minutesLow Battery Indication “LO”Display Single Custom LCDOperatingTemperature 0 to 50 oCPower Requirements 4 x “AAA” Alkaline BatteriesBattery Life 500 hoursMeter Dim./Weight 15.7 x 8.5 x 4.2 cm / 255 g