This document provides instructions and warranty information for the HI 4221 and HI 4222 pH/mV/ISE/Temperature Bench Meters. The products are capable of measuring pH, mV, ISE, and temperature, and come with a two-year warranty. They are manufactured by Hanna Instruments.
The HI 4221 and HI 4222 are professional bench meters featuring a color graphic LCD for pH, ORP, ISE (HI 4222 only), and temperature measurements. They support manual, automatic, and semiautomatic calibration up to five points with standard and custom buffers. The instruments offer features such as AutoHold, selectable alarm limits, and various logging modes with up to 100 lots. They include a user-friendly interface on a large 240x320 pixel color graphic LCD.
| Display | Color graphic LCD (240x320 pixels) |
|---|---|
| Calibration Points | Up to five points |
| Standard Buffers | 1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45 |
| Power Adapter | 12 Vdc/230 Vac |
| Warranty Period | Two years |
The meters are warranted for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions.
The instruments support manual selection, automatic and semiautomatic pH calibration up to five points.
Yes, the HI 4222 supports ISE measurements, while the HI 4221 does not.