HANNA® Instruments Calibration Check™ pH Meters

Automatically Check the Condition of Your Electrode and Calibration Buffer

These meters compare the characteristics of the pH electrode from one calibration to the next and even tell you if your electrode needs cleaning!
Specifications: Benchtop Calibration Check Meters HI 221 and HI 223 can be programmed to sound an alarm if a new calibration is necessary. Features include a PC interface, last calibration date and data, log on-demand function and automatic one- or two-point pH calibration. Portable Calibration Check Meter can be programmed to time out anywhere from one to 14 days from the time of calibration. Nos. 132699 and 132704 include a general-purpose glass body, single junction, refillable, combination pH electrode, stainless steel temperature probe, electrode holder, pH 4.01 and 7.01 calibration solutions, electrolyte solution, 12V DC adaptor and instruction manual. No. 135081 includes a double-junction, gel-filled pH electrode and an ATC electrode, batteries, calibration solution and a hard carrying case. Portable meter measures 7.7"H x 3.1"W x 2.4"D.

Note: Calibration Service Available. Click here for details.