Hanna pH/ISE Bench pH Meter, HI4222 (HI 4222)

Large graphical, DUAL CHANNEL meter with
dot matrix color display and real-time logging.

The Hanna HI4222 is a high accuracy, dual channel research grade pH meter that provides simultaneous display of two sensor channels. In addition to pH, the HI4222 has an mV scale for use with optional ORP electrodes and a direct ion concentration scale for use with optional Ion Selective Electrodes (ISE’s). Temperature is also measured by the included HI7662-T temperature probe. Hanna’s exclusive CAL CHECK™ feature warns if the measurement is outside the calibration range via a graphic message.

The user can choose up to five calibration points to facilitate precision, using standard or custom buffers. This advanced meter can display extensive GLP (Good Lab Practices) data, concurrent measurement readout with logged graphic data, calibration data with buffer values used, expiration date and ionic strength constant value definition (ISE measurement only). Touch a button to access onscreen help and procedures in four languages.

Key Features of Hanna HI 4222...

• Dual display of two sensor channels. For example, see measurements simultaneously from a pH electrode and an optionally available ammonia Ion Selective Electrode (ISE) probe.
• Instant access to GLP calibration data including offset/slope, date/time, buffer solutions used, and electrode condition. GLP data for pH electrode and any optional probes,such as an ISE probe or an ORP electrode.
• Meter can calculate a calibration curve by using up to five points from eight built-in values and five user customed values.
• Hanna’s exclusive CAL CHECK™ automatically provides probe condition based on both offset and slope.
• Direct ion concentration readout – not just mV value (requires optional ISE probe).
• ISE Incremental Methods make ion concentration determination faster and easier.
  Incremental methods: Known Addition, Known Subtraction, Analyte Addition, Analyte Subtraction.
• Computer communication via both USB and RS232 Serial outputs.
• Real-time graphing on large dot-matrix color display screen.
• Content-Sensitive Help. Touch HELP key and information related directly to current display screen is presented.

The HI 4222 is supplied with...

• HI 4222 Graphical color display pH / mV / ISE meter.
• HI 1131B pH electrode.
• HI 7662-T temperature probe.
• Power adapter.
• pH 4 and pH 7 buffer solutions.
• Electrode refilling solution.
• HI 76404N electrode holder.
• Instruction manual.

Specifications include...

Range	pH: -2.000 to 20.000 pH mV: ±2000.0 mV Selective Ions: 1x10-7 to 9.99x1010 conc. Temp: -20.0 to 120.0°C (-40.0 to 248.0°F)
Resolution:	pH: 0.1 pH / 0.01 pH / 0.001 pH mV: 0.1 mV Selective Ions: 1/ 0.1 / 0.01 / 0.001 conc. Temp: 0.1°F (0.1°C)
Accuracy (20°C/68°F):	pH:±0.1 pH / ±0.01 pH / ±0.002 pH mV: ±0.2 mV ±1 LSD Selective Ions: ±0.5% (monovalent ions) / ±1% (divalen ions) / ±1.5% (trivalent ions) Temp: ±0.2°C
Relative mV Offset Range:	±2000.0 mV
Input Channels:	Two: pH / mV / ISE
Calibration Check:	Status of electrode condition and response time, status of the buffer solutions during calibration
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) plus five custom buffers.
Ion Calibration:	Automatic, up to 5 points with 6 standard values plus five custom values.
Temp. Compensation:	Automatic or manual, -20.0 to 120°C (-4.0 to 248.0°F).
pH Electrode:	HI 1131B.
Temp. Probe:	HI 7669/2W.
Input Impedance:	1012 Ohm.
Log-on-demand:	5000 samples per lot, 10 lots.
Auto Data Logging:	5000 samples per lot, 10 lots.
PC Connection:	USB and RS232 opto isolated ports.
Menu Languages:	English, Italian, Spanish, French.
Display:	240x320 dot-matrix color LCD with on-screen help, graphing, language selection, and custom configuration.
Power Supply:	12 VDC adapter.
Environment:	0 to 50°C (32 to 122°F); RH max 95%.
Dimensions:	159mm x 230mm x 93mm. (6.3" x 9.1" x 3.7")
Weight:	800g (1.8 lb.)