Thermo Orion Star A321 Portable pH Meter
Features
- Calibration editing ensures accurate pH, mV, RmV and temperature readings
- AUTO-READ function alerts user and locks stable readings on backlit LCD screen
- USB and RS-232 ports allow easy data transfer of up to 5000 time-stamped data points
| Image | Part# | Product Description | Price | Stock | Order | |
|---|---|---|---|---|---|---|
 | STARA3210 | Orion Star A321 pH Portable Meter | $744.93 | Usually ships in 3-5 days | ||
 | STARA3215 | Orion Star A321 pH Portable Meter Kit | $1,281.54 | Usually ships in 3-5 days | ||
| Image | Part# | Product Description | Price | Stock | Order | |
|---|---|---|---|---|---|---|
 | STARA-CS | Orion Star A-series portable hard field case | $143.22 | Usually ships in 3-5 days | ||
 | 1210005 | Orion Star A-series portable soft field case | $150.66 | Usually ships in 3-5 days | ||
 | STARA-AR | Orion Star A-series portable meter armor | $104.16 | Usually ships in 3-5 days | ||
 | STARA-ESPH | Orion Star A-series pH electrode holder for use with armor | $28.83 | Usually ships in 3-5 days | ||
 | 810017 | Orion storage sleeve & base for 12mm x 120mm electrodes | $55.15 | Usually ships in 3-5 days | ||
 | 8107UWMMD | Orion ROSS Ultra pH/ATC Triode with epoxy body, low maintenance gel, waterproof BNC & MiniDIN connector, 3m cable | $519.87 | Usually ships in 3-5 days | ||
 | 8107BNUMD | Orion ROSS Ultra pH/ATC Triode with epoxy body, low maintenance gel, waterproof BNC & MiniDIN connector, 1m cable | $505.92 | Usually ships in 3-5 days | ||
 | 1010003 | Orion universal power adapter for Star meters | $67.33 | Usually ships in 3-5 days | ||
 | 910410-WA | Orion pH 4 calibration buffer, (10) individual pouches | $34.50 | Usually ships in 3-5 days | ||
 | 910710 | Orion pH 7 calibration buffer, (10) individual pouches | $34.50 | Usually ships in 3-5 days | ||
 | 911010 | Orion pH 10 calibration buffer, (10) individual pouches | $34.50 | Usually ships in 3-5 days | ||
 | 911110 | Orion electrode rinse, (10) individual pouches | $33.85 | Usually ships in 3-5 days | ||
 | 9179BNMD | Orion ORP/ATC Triode with epoxy body, low maintenance gel, waterproof BNC & MiniDIN connector, 1m cable | $395.25 | Usually ships in 3-5 days | ||
 | 967961 | Orion ORP standard, 60mL bottles, 5 pack | $90.95 | Usually ships in 3-5 days | ||
The waterproof, battery-operated Thermo Orion Star A321 portable pH meter stands up to the most demanding field applications to deliver the most advanced performance of any portable meter. Four AA batteries, included with purchase of the A321, provide over 800 hours of continuous operation so the instrument is ready when it's needed, where it's needed. The meter displays reliable pH, mV, RmV and temperature readings on a large, backlit LCD screen and automatically locks in stable readings.
Thermo Orion Star A320 series portable meters provide the largest storage capacity available for time-stamped data points, which can be conveniently uploaded to a PC through the meter's USB and RS-232 ports. Automatic or 1 to 5 point manual calibration makes instrument setup simple, while icons provide quick updates on battery life, electrode status and calibration information. The simple button layout and on-screen messages also assist with calibration and explain setup menu choices.
- AUTO-READ function alerts user and locks on-screen readings when stable
- Up to 5 point pH calibration with calibration editing
- Automatic recognition of USA/NIST and DIN buffers
- Easy to recall calibration slope data for procedure checks
- Non-volatile memory holds up to 5000 data points
- USB and RS-232 ports to upload data and update included data analysis software
- Universal power supply or battery power option
- Includes (4) AA batteries to provide over 800 hours of operation
- Universal power adapter (sold separately) runs meter on AC power
- Multilanguage interface supports English, Spanish, French, Italian, German and Chinese
- IP67-rated waterproof housing (can be immersed up to one hour with no water incursion)
- 3 year meter warranty
- pH
- Range: -2.00 to 20.00
- Resolution: 0.1, 0.01, 0.001
- Relative Accuracy: +/-0.002
- Calibration Points: Up to 5
- Calibration Editing: Yes
- mV/RmV
- Range: +/-2000.0 mV
- Resolution: 0.1 mV
- Relative Accuracy: +/-0.2mV or 0.05%, whichever is greater
- EH ORP Mode: Yes
- Temperature
- Range: -5 to 105 C
- Resolution: 0.1
- Relative Accuracy: +/-0.1 C
- Offset Calibration: 1 point
- Datalogging
- Number of Points: 5000 with time and date stamp
- Log Function: Manual, ready (AUTO-READ), timed
- Log Edit: Delete individual points, group of points or all
- General
- Display: Backlit LCD
- Inputs: pH Electrode - BNC, ATC Probe - 8-pin mini-DIN
- Outputs: RS-232, USB
- Power Adapter: Universal AC, 100-240 VAC
- Battery Power: 4 AAs, 800 hrs life
- Environmental Requirements: 5 to 45 C and 5 to 85% relative humidity, non-condensing
- Regulatory and Safety: CE, TUV 3-1, FCC Class A
- IP Rating: IP67, waterproof
- Warranty: 36 months (from date of purchase)
Both meters have the same measuring ranges and feature an IP67-rated dust-proof and waterproof housing, The A321 features a 5000 point time/date stamped data log where the A221 features a 1000 point time/date stamped data log.
Yes, the calibration due alarm on the Star A321 can be set to a user-specified length of time.
In The News
Tides and microbes transform nitrogen where streams and the ocean meet
Enormous amounts of excess nitrogen hit water bodies all over the globe, including the U.S., due to runoff from agricultural and other human activities. This nitrogen can cause dead zones and harmful algal growth. Before it reaches the ocean, microbes can process and remove some of it from stream sediments, connected aquifers and tidal freshwater zones. Thanks to this process, coasts can have a decreased likelihood of harmful algal blooms. Keeping coastal waters clean is important for many reasons, including the fact that about 60% of the U.S. population lives on coasts. But despite the importance of these nitrogen processes, researchers have not fully investigated how they work.
Read More
Climate, nutrients and the future of hypoxia in a Chesapeake Bay tributary
The Chesapeake Bay is the site of recurring seasonal dead zones: areas of low dissolved oxygen where aquatic life struggles to survive if it can at all. In 2020, a dead zone in the Maryland portion of the bay was one of the smallest since 1985, when record keeping began. The hypoxic area in the Virginia portion of the bay was smaller and briefer than many years previous. But the problem isn’t gone yet, and looking forward, climate change will play a big role in determining the size and severity of dead zones throughout the bay. It could make it harder to get hypoxia under control in some places.
Read More
Fecal bacteria rises with sea level on Texas beaches
As climate change lifts the sea level in the Gulf of Mexico, it’s lifting levels of enterococci bacteria on Texas’s beaches, too. New research out of the Gulf shows that high levels of enterococci bacteria, which come from humans and other animals and can cause disease, are correlated with proximity to large human populations and sea level rise and are increasing over time. The research highlights an area of growing concern for public health and safety on popular recreational beaches. While sea level is projected to continue rising, it’s not a guarantee that bacteria levels will as well.
Read More
