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Orion Star A329 pH/ISE/Conductivity/Dissolved Oxygen Portable Multiparameter Meter

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List Price: $2,129.00
Clarkson Price: $1,809.65
You Save: $319.35 (15 %)
Clarkson Catalog Number: STARA3290
Manufacturer: Thermo Orion
Supplier Catalog Number: STARA3290
Manufacturer Direct Shipment
free shipping
Orion STARA3290, Orion STARA3295
Clarkson STARA3290
Orion Star A329 pH/ISE/Conductivity/Dissolved Oxygen Portable Multiparameter Meter
Thermo Orion STARA3290 / Cole-Parmer EW-58825-76 / Fisher 13-645-569 / VWR 89206-372 / Spectrum 246-92236 / Daigger EF9439N

Thermo Scientific Orion Star A329 pH/ISE/Conductivity/RDO/Dissolved Oxygen Portable Meter

The Thermo Scientific Orion Star A329 pH/ISE/Conductivity/RDO/Dissolved Oxygen Portable Meter is the top choice for advanced
multiparameter measurements on location. Get the information you need quickly and easily from the large, backlit graphic LCD display. Informative display can show each parameter with temperature individually or all three with temperature on one screen. Additional helpful icons include electrode status, time, date, sample ID, user ID and calibration points. Advanced features such as stability and averaging options provide additional options allowing for laboratory accuracy everywhere you need it.

Features and Benefits

  • Anyone can use this meter with its plain language screen prompts, soft keys that update for easy selection and a multilanguage interface that supports English, Spanish, French, Italian, German and Chinese
  • Don’t miss a reading – AUTO-READ locks in the stable reading on your screen, ready indicator alerts when readings are stable and timed reading gathers data in specific time intervals
  • Up to 5 point pH calibration with automatic recognition for USA/NIST and DIN buffers
  • Fix pH and ISE calibration errors without a complete recalibration with calibration editing
  • No need to worry about DO probe compatibility – the meter accepts and automatically recognizes Orion polarographic and RDO optical/luminescence-based probes
  • It’s easy to get accurate DO results with automatic temperature, automatic/manual barometric pressure and automatic salinity compensation when used with simultaneously with conductivity
  • Calibrate for DO using water-saturated air, air-saturated water, a Winkler titration or zero point calibration
  • Selectable cell constant allows for use with 2- or 4-cell conductivity cells
  • For advanced accuracy in conductivity readings, selectable reading reference temperatures of 5, 10, 15, 20 or 25 ºC with linear, non-linear, nLFu or USP/EP curve options
  • Choice of practical salinity or natural sea water curves for salinity readings
  • Linear or ISO/EN 27888 curves for TDS
  • Whether you use ISE infrequently or have multiple samples every day – up to 5 point ISE calibration with advanced features such as timed end point, linear point-to-point, non-linear selectable auto-blank and low-concentration range stability
  • Non-volatile memory holds up to 5000 data points with time and date stamp
  • Easily transfer data and keep meter software up-to-date with the USB and RS232 ports and complimentary data analysis software
  • User and sample ID fields for additional data accuracy
  • Stores up to 10 methods allow for customized procedures to differentiate between tests and/or users
  • Four AA batteries (included) provide over 800 hours of operation or purchase the universal power adapter (sold separately) to use AC power
  • Perfectly portable, waterproof and protected to take anywhere with a IP67-rated housing
  • 3 year meter replacement warranty
pH Range -2.000 to 20.000
Resolution 0.1, 0.01, 0.001

Relative Accuracy


Calibration Points

Up to 5

Calibration Editing


mV/Rel mV/ORP

Range ±2000.0 mV
Resolution 0.1

Relative Accuracy

±0.2 mV or ±0.05 % of reading whichever is greater

EH ORP Mode Yes
ISE 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


Calibration Features

Timed end point, linear point to point, non-linear selectable auto-blank, low concentration range stability

Conductivity Range 0.001 μS to 3000 mS

0.001 μS minimum;
4 significant figures minimum

Relative Accuracy

0.5 % reading ±1 digit

Reference Temperature

5, 10, 15, 20, 25 °C (default)

Temperature Compensation

Linear (0 to 10.0 %/°C), nLn, nLFu, USP/EP

Compatible Cell Constants

0.001 to 199.9

Calibration Points

Up to 5 points

Calibration Editing


Range 2 ohm to 100 meg-ohm
Resolution 2 ohms-cm

Relative Accuracy

0.5 % reading ±1 digit


Practical salinity or natural sea water

0.01 to 80.0 psu
0.01 to 42 ppt sea water

Resolution 0.01

Relative Accuracy

TDS Range 1 to 200 ppt
Resolution 4 significant digits

Relative Accuracy

±0.5 % reading ±1 digit

TDS Factor Range

Linear 0.01 to 10.00, default 0.49


Concentration - Polarographic
Range 0 to 90 mg/L
Resolution 0.01, 0.1

Relative Accuracy

% Saturation - Polarographic
Range 0 to 600
Resolution 0.1, 1

Relative Accuracy

±2 %
Concentration - RDO
Range 0 to 50 mg/L
Resolution 0.01, 0.1

Relative Accuracy

±0.1 mg/L up to 8 mg/L;
±0.2 mg/L from 8 to 20 mg/L;
10 % of reading from 20 to 50 mg/L

% Saturation - RDO
Range 0 to 500
Resolution 0.1, 1

Relative Accuracy

±2 %

Automatic Barometric
Pressure Correction

450.0 to 850.0 mm Hg

Salinity Factor Correction

Automatic with separate conductivity probe or manual; 0 to 45 ppt

Calibration Features

Water-saturated air, air saturated water, manual (Winkler) and zero point

Probe Characteristics

Polarographic or RDO
Temperature Range

-5 to 105 °C, 23 to 221 ºF
(0 to 50 ºC, 32 to 122 ºF with RDO)

Resolution 0.1

Relative Accuracy


Offset Calibration

1 point

Number of Datalogs

5000 with time and date stamp
Log Function Manual, ready (includes AUTO-READ™), timed
Inputs pH Electrode BNC, reference pin

Conductivity with
Temperature Probe or
ATC Probe

8-pin mini-DIN

DO with Temperature

9-pin mini-DIN
Output RS232, USB
Power AC Adapter Optional – universal, 100-240 VAC
Battery Power Included – 4 AAs
Battery Life 800 hrs
Caalog Number Description
STARA3290 * Orion Star A329 pH/ISE/Conductivity/Dissolved Oxygen
Portable Multiparameter Meter
- Four AA batteries (installed)
STARA3295 Orion Star A329 pH/ISE/Conductivity/Dissolved Oxygen
Portable Multiparameter Meter Kit
- 8107UWMMD Orion ROSS Triode 3-in-1 pH/ATC probe, 3m cable
- 013010MD Orion DuraProbe conductivity cell, 3m cable
- 087010MD Orion RDO optical/luminescence-based probe with 3m cable, stainless steel guard,
calibration sleeve and optical/luminescence-based cap
- 910410 Orion pH 4.01 buffer, 10 pouches
- 910710 Orion pH 7.00 buffer, 10 pouches
- 911010 Orion pH 10.01 buffer, 10 pouches
- 810001 Orion ROSS electrode storage solution, 475 mL
- 01100710 Orion 1413 μS conductivity standard, 10 pouches
- 911110 rinse solution, 10 pouches
- Protective armor with probe holders
- Hard carrying case
- Four AA batteries (installed)
Additional Information
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