Orion Star A324 pH / ISE Portable Meter

  • High Range pH Applications pH measurement range from -2.000 to 20.000
  • High Range ISE Applications ISE measurement range from 0 to 19999
  • Non-Volatile Memory Memory capacity to store up up 5000 time and date stamped data points
  • Warranty A324 pH/ISE meter is covered by a 3 year replacement meter warranty
Product Options


Advanced features of the Orion Star A324 pH/ISE Portable Water Quality Meter are that it can manage up to 5 point pH calibration with automatic recognition for USA/NIST and DIN buffers. 5 point ISE calibration features are perfect if ISE is used either infrequently or everyday for multi samples because of fine features such as timed end point, linear point to point, non linear selectable auto-blank and low concentration range stability. A memory capable of storing up to 5000 data points with time and date stamps plus stability and averaging options providing additional options allowing for essential accuracy to laboratory standard. Errors can be solved without the need for complete calibration by using the calibration editing function.

Standard features supporting this water quality meter are Multilanguage options in English, Spanish, French, Italian, German and Chinese. Updating and transferring of data is simple using the USB and RS232 ports along with data analysis software. The integrated AUTO-READ™ system alerts the user when readings are stable and locks them on screen so they will never be missed with the advantage of timed readings which store data at specific time intervals.

Protected with IP67-rated housing and fully waterproof the portable meter can be used in a multitude of locations. With the added benefit of being powered either by batteries which provide over 800 hours of operation or from a universal power adapter purchased separately and the standard 3 year replacement warranty make this the ideal choice.

Manufactured by: Thermo Scientific
Model: Orion Star A324 pH / ISE Portable Meter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Groundwater grab samples
Contaminated land
ORP testing
Ion specific testing
Drinking water


Range -2.000 to 20.000
Resolution 0.1, 0.01, 0.001
Relative Accuracy ±0.002
Calibration Points Up to 5
Calibration Editing Yes
Range ±2000.0 mV
Resolution 0.1
Relative Accuracy ±0.2 mV or ±0.05 % of
reading whichever is greater
EH ORP Mode Yes
Range 0 to 19999
Resolution Up to 3 significant digits
Relative Accuracy ±0.2 mV or ±0.05 % of
reading whichever is greater
Units ppm, M, mg/L, %, ppb, none
Calibration Points Up to 5
Calibration Editing Yes
Calibration Features Timed end point, linear point to point, non-linear selectable auto-blank, low concentration range stability
Range -5 to 105 °C, 23 to 221 °F
Resolution 0.1
Relative Accuracy ±0.1
Offset Calibration 1 point
Number of Points 2000 with time and date stamp
Log Function Manual, ready (includes AUTO-READ™), timed
Log Edit Delete individual points, group of points or all
pH Electrode BNC, reference pin
ATC Probe 8-pin mini-DIN
Output RS232, USB
AC Adapter Optional universal, 100-240 VAC
Battery Power Included 4 AAs
Battery Life 800 hrs