HI 4211 and HI 4212 are single and dual-channel Calibration Check™ pH meters with a backlit, dot matrix display. These instruments perform electrode diagnostics to ensure that the electrode used is always in good condition. As part of the Calibration Check™ feature, if the measurement is outside of the calibration range, users are warned with a graphic message. In order to always perform a calibration that is as close as possible to the measurement range, the user has the flexibility to choose up to 5 calibration points with standard or custom buffers. The dual-channel HI 4212 provides simultaneous graphing and logging of each independent channel on the screen. These meters can display extensive GLP data, concurrent measurement readout and logged graphed data, calibration data with used buffer values and expiration date and definition of the ionic strength constant value (ISE measurement only). HI 4211 and HI 4212 also provide on screen feature related help: at the touch of a button users can access current content related guidelines and procedures in 4 languages.
HI 4211 is supplied complete with power adapter and instructions. HI 4211-01 is supplied complete with HI 1131B, pH electrode, HI 7669/2W temperature probe, power adapter, pH 4 and pH 7 buffer solutions, electrode refilling solution, HI 76404N electrode holder, and instructions.