HI 4221 is a single-channel, research-grade laboratory pH Bench Meter with a backlit 240 x 320 dot-matrix color screen and millesimal measuring resolution. Features include auto-logging and real-time graphic displays, auto-end point mode and a fully customizable SETUP button. This unit allows for automatic (ATC) or manual (MTC) temperature compensation.
For accountability, on-screen GLP data capture contains calibration information, including buffer values and expiration date, concurrent with measurement readings and logged graph data. With the option to choose up to 5 calibration points for pH - selected from a list of 5 custom and 8 memorized buffers - the system can be fitted to any desired measuring range.
Our exclusive Calibration Check diagnostics system determines the quality and condition of the electrode and buffer groups during calibration, and keeps you informed. An enhanced warning system, with acoustic signals, alerts the user when measuring is outside of the calibration range. This system also reminds the user when a new calibration is due, or when the wrong buffer is being employed during calibration. This unit can be given a unique ID number.
The user may consult the on-board contextual help from any mode simply by pressing the HELP menu. All the features are available in English, Italian, French and Spanish. Galvanically isolated channels HI 4221 eliminates interference and instability. Connect HI 4221 to a PC via the opto-isolated USB and RS232 ports and utilize the HI 92000 software Window® compatible software to capture and store all your data.
pH Range
-2.0 to 20.0; -2.00 to 20.00; -2.000 tp 20.000 pH
pH Resolution
0.1 pH; 0.01 pH; 0.001 pH
pH Accuracy
±0.1 pH; ±0.01 pH; ±0.002 pH
mV Range
±2000 mV
mV Resolution
0.1 mV
mV Accuracy
±0.2 mV
Temperature Range
-20.0 to 120°C; -4.0 to 248.0°F; 253.15 to 393.15K
Temperature Resolution
0.1°C; 0.1°F; 0.1K
Temperature Accuracy
±0.2°C; ±0.4°F; ±0.2K
pH Calibration
Automatic up to 5 points with 8 memorized values
(pH 1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) + 5 custom buffers
Temperature Calibration
3 points
Relative mV Offset Range
±2000 mV
Input Channel(s)
1 pH/mV
Calibration Check
pH electrode and buffer condition
pH Temperature Compensation
Automatic or manual from -20.0 to 120.0°C (-4.0 to 248.0°F)
Log on Demand
10 Lots, 5000 samples per lot / 10 Lots, 5000 samples per lot
Auto Endpoint
Yes
PC Connection
Opto-isolated USB and RS232
Display
240 x 320 dot-matrix color LCD with on-screen help, graphing,
language selection and custom configuration
Power
12 VDC adapter (included)
Dimensions
159 x 230 x 93 mm (6.3 x 9.1 x 3.7")
HI 4221 is supplied with glass body pH electrode, temperature probe, *power adapter, pH 4 and pH 7 buffer solutions, electrode refilling solution, electrode holder and instructions *Add -01 to end of Product Code for 115V power adapter.
Strict quality assurance from The Lab Depot for our ORP meter and our Hanna orp, in addition to our more than 750,000 other lab products, means you will always have confidence in your research, development or quality control results. After all, your laboratory testing procedures should only include the very best – whether bench top temperature meters, chemicals, glassware or other sophisticated instrumentation. Always look to The Lab Depot for value and for quality lab equipment.
1.800.733.2522
