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Hanna Ion Meters

Jenway Model 3345

Ion meter supplied with glass combination electrode (924 005), swing arm electrode holder, BNC to S7 lead less connector (013 173), ATC probe (027 232), pH 4 and 7 buffers, UK power supply and operating instructions.

  • Ideal for quality control and GLP applications
  • LCD graphics display
  • Operation via simple menus with 6 language options
  • Auto buffer recognition
  • Full interfacing capability

The Model 3345 is a sophisticated laboratory unit offering a host of valuable features, but retaining simplicity of operation.Important measurement features include the ability to operate both channels completely independently, simultaneous display of readings and temperature on both channels, and independent indication of stable readings. Details of the last calibration for each sensor are provided and all logged results and calibration routines are date and time stamped, thus satisfying the requirements of G.L.P.

The product will store up to 100 readings which can subsequently be recalled onto the instrument display or down loaded to a printer or PC via the bi-directional RS232 link. User programmable options include the ability to print out current readings or prompt calibration at pre-determined intervals and the setting of alarm points which are activated when the measured parameter falls outside the pre-set limits.

The Model 3345 offers additional flexibility with two additional modes of ion analysis: Known addition/subtraction for the determination of ion concentration closer to the lower detection limit of the electrode and Multiple Sample addition/subtraction allowing measurement in dense and concentrated matrices.

Model 3345 Specifications

  • pH Range: -2 to 19.999pH
    • Resolution: 0.1 / 0.01 / 0.001pH
    • Accuracy: ± 0.003pH
  • mV Range (Abs & Rel): 0 to ±1999.9mV
    • Resolution: 0.1mV
    • Accuracy: ±0.2mV
  • Concentration Range: 1x10-9 to 9.99x109
    • Resolution: 3 significant digits
    • Accuracy: ± 0.003pX for monovalent ions
  • Units: Activity, ppm, %, mg/l, M or none
  • Measurement Method: Direct potentiometry / Incremental
  • Temperature ranges: -10 to +105°C / 14 to 220°F
    • Resolution: 0.1°C / 1°F
    • Accuracy: ±0.5°C / ±1°F
  • Manual & ATC ranges: 0 to 100°C / 32 to 212°F
  • Auto buffer recognition: 2.00, 4.00, 7.00, 9.22, 10.05 (manual override)
  • Calibration:
    • User selectable 1, 2 or 3 point pH
    • 1 to 5 point Concentration
  • Outputs:
  • Analogue 1mV per digit
  • Bi-directional RS232
  • Alarm: Hi/Lo alarm outputs open collector 0.5A 50V max.
  • Alarm Points: -2 to 19.999pH / ±1999mV / 1x10-9 to 9.99x109
  • Electrode Inputs: 2
  • Temperature Inputs: 2
  • Data logger: 100 results
  • Clock: 24 hour, hrs/min/sec or day of month, month and year, leap year corrected
  • GLP: Calibration reminder with an interval of 1-999 hours from last calibration / Timed printout with an interval from 1 second to 1 day
  • Display: LCD graphics
  • Power: Power supply 9V a.c.
  • Size: 275(l) x 240(w) x 150(d) mm
  • Weight: 1.2Kg

Bench pH meters with multiple and custom calibration points.

A range of high specification bench pH meters offering outstanding value for money.

Recently updated with all measuring ranges extended, the PH210 and PH211 standard laboratory instruments have been joined by HI-110 and HI-111 to offer greater flexibility during pH calibration. A calibration of upto 3 points from 5 memorised values can be performed with the HI-110 and HI-111, with the further option of 2 custom buffers. Information is also stored for GLP purposes.

All meters have been designed to obtain accurate readings whilst being simple to operate. A large LCD displays simultaneous pH/mV and temperature readings, and abridged instructions for calibration appear on the front panel. Readings are automatically compensated for temperature to ensure accuracy, and error messages and screen prompts ensure that pH calibration is completed quickly and easily.

Supplied complete with refillable glass pH electrode, temperature probe, electrode stand, calibration sachets, electrode refill solution and mains power lead. Meters carry a three-year guarantee.





pH range/resolution

-2.00 to 16.00/±0.01

pH accuracy


mV range/resolution ISE

±399.9/ 0.1

±699.9/ 0.1

mV range/resolution ORP

±2000/ 1

±2000/ 1

Temperature range/res

-9.9 to 120.0°C/ 0.1

Temperature accuracy


Auto calibration points

1 or 2

1,2 or 3

1 or 2

1,2 or 3

Memorised buffer values

4.01; 6.86; 7.01; 9.18; 10.01

Custom Buffers




240 x 182 x 74 mm


1.1 Kg


HI-1131B Replacement pH electrode

HI-3230B ORP electrode


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