Description
Thermo Scientific™ Orion™ Star™ A325 pH/mV/RmV/ORP/Conductivity/TDS/Salinity/Resistivity/Temperature Portable Multiparameter Meter Kit with pH Electrode and Conductivity Cell, STARA3255
Features:
- Combined convenience with the benefits of a pH meter and conductivity meter in one easy-to-use system
- Measure pH, mV, relative mV or ORP with temperature on channel one and measure conductivity, TDS, salinity or resistivity with temperature on channel two
- Easily view individual measurements on a full screen display and quickly toggle to a split screen display to view multiple measurements simultaneously
- Perform up to a five point pH calibration using automatic buffer recognition of NIST or DIN buffer groups with choice to manually enter custom buffer values
- Perform up to a 5 point conductivity calibration
- Calibration editing option allows individual points to be fixed without a full recalibration
- Auto-ranging conductivity values offer consistent readings across entire measurement range without need to recalibrate
- Use linear, non-linear, EP (USP) or off conductivity temperature compensation with 5 °C, 10 °C, 15 °C, 20 °C or 25 °C reference temperatures
- Informative, easy-to-read backlit graphic display with clear onscreen instructions simplifies operation
- Capture your critical readings with measurement stability indicator and selectable read modes — Auto-Read holds a stable reading, Continuous shows changing readings with hold option and Timed logs data at specific intervals
- Data log collects and date/time stamps up to 5000 measurement sets with optional sample ID and user ID
- Calibration log stores 10 most recent calibrations
- Non-volatile meter memory ensures your data and settings are protected, even with loss of power
- Orion Star Com software facilitates data transfer to a computer via USB or RS232 connections
- Flexible power options with AA batteries or optional universal power adapter
- IP67-rated housing is waterproof for rugged field operation
Included:
- Orion STAR A325 pH/conductivity portable meter
- 91-2661-53 (8107UWMMD) Orion ROSS Triode pH/ATC gel-filled electrode with 3 m cable
- 91-2661-49 (013010MD) Orion DuraProbe conductivity cell with 3 m cable
- 21-2112-04 (910410) pH 4.01 buffer pouches, pack of 10
- 21-2112-07 (910710) pH 7.00 buffer pouches, pack of 10
- 21-2112-10 (911010) pH 10.01 buffer pouches, pack of 10
- 17-7109-06 (01100710) conductivity standard pouches, 1413 µS
- 21-2112-21 (911110) rinse solution, pack of 10
- 91-2639-63 (STARA-AR) Protective armor with electrode holder, adjustable wrist/belt strap and built-in stand
- 91-2639-60 Hard carrying case
- 4 x AA batteries
Specifications:
| Accuracy (Conductivity) | 0.5% of reading ±1 digit > 3 μS; 0.5% of reading ±0.01 μS ≤ 3 μS |
| Accuracy (mV) | ±0.2 mV or ±0.05% of reading whichever is greater |
| Accuracy (pH) | ±0.002 |
| Accuracy (Resistivity) | 0.5% of reading ±1 digit |
| Accuracy (Salinity) | 0.5% of reading ±1 digit |
| Accuracy (TDS) | 0.5% of reading ±1 digit |
| Alarm Output | High/low limit alarm, calibration due alarm |
| Backlight Option | Yes, selectable |
| Battery Life | 800 hr. |
| Calibration | pH with calibration editing option, relative mV (RmV), ORP, conductivity with calibration editing op |
| Calibration Points | 1 point relative mV (RmV) mode, 1 point ORP mode |
| Calibration Points (Conductivity) | Up to 5 |
| Calibration Points (pH) | 1 to 5 |
| Cell Constant | 0.001 to 199.9 cm-1 |
| Data Management Details | Transfer single, range or all data points to printer or computer |
| Data Points | 5000 with date and time stamp |
| Channels | 2 |
| Display Type | LCD Graphic, Backlit |
| Resolution (pH) | 0.1/0.01/0.001 |
| Isopotential Point | 7.000 pH |
| Keypad | Comprehensive with menu-specific function keys and dual purpose scroll/shortcut keys |
| Languages | English, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update |
| Log Function Type | Automatic data logging with Auto-Read and Timed measure modes; manual data logging with Continuous mode |
| Memory | Non-volatile memory preserves data log, calibration log and meter settings |
| Methods | 10 per channel with password protection |
| Resolution (Conductivity) | 0.001 μS minimum, auto ranging up to 4 significant digits |
| Resolution (mV) | 0.1 mV |
| Resolution (Resistivity) | 1 ohm or 0.1 meg-ohm, auto ranging |
| Resolution (Salinity) | 0.01 psu or 0.01 ppt minimum, auto ranging |
| Resolution (TDS) | 0.001 ppm minimum, auto ranging up to 4 significant digits |
| Salinity Measurement Modes | Practical salinity (psu) or natural sea water (ppt) |
| Stability | Selectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting |
| TDS Factor Range | Linear (0.02 to 9.99) |
| Temperature Accuracy | ±0.1 °C |
| Temperature Compensation | Linear, nLFn (non-linear ultra pure water), nLFu (non-linear ultra pure degassed water), EP (off with warning) or off |
| Temperature (Metric) Reference | 5, 10, 15, 20, 25 °C |
| Temperature Probe Calibration | 1 point temperature offset calibration |
| Temperature Resolution | 0.1 °C / 0.1 °F |
| Temperature Selection | Manual or automatic with ATC temperature probe |
Specifications
| Power | 4 AA (included), Optional, Universal 50-60 Hz, 100-240 VAC power adapter |
|---|---|
| Manufacturer | Thermo Scientific Orion |
| Model No | STARA3255 |
SDS PDFs
It is our policy to provide the latest Safety Data Sheet (SDS) for all chemicals we ship. Each shipment will contain copies for every chemical contained in the shipment, and for any chemical included in an instrument kit or calibration kit.
Contact us for additional copies of an SDS or for a copy of the Certificate of Analysis:
Phone: 1-800-624-8285
Email: INFO_SDS@preiser.com

