YSI EcoSense pH1000A [601100] Benchtop pH Meter (Instrument only). The YSI EcoSense pH1000A benchtop pH meter provides accurate measurements of pH, ORP, and temperature, displaying values simultaneously on a large LCD display. It holds stable measurements on the display for repeatable, error-free measurements, and features automatic and manual temperature compensation on pH measurements. Automatic buffer recognition and the electrode efficiency display maintain simple and reliable calibrations which are stored in the instrument's memory. The BNC input allows for any pH or ORP electrode with BNC to be connected. The YSI EcoSense pH1000A benchtop pH meter is available as a kit with the 601113 electrode stand, the 601102 pH and temperature electrode, or both. The YSI EcoSense 601101 pH electrode and 605376 ORP electrode are sold separately. Accepts US (7.00, 4.01, 10.01) or NIST (6.86, 4.00, 9.18) buffer sets.