Thermo Orion Star A121 Portable pH Meter
Features
- Displays pH and mV readings using Orion BNC or waterproof BNC electrodes
- AUTO-READ function alerts user and locks on-screen readings when stable
- IP67 waterproof rating
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The waterproof, battery-operated Thermo Orion Star A121 portable pH meter stands up to the most demanding field applications and delivers over 2,000 hours of continuous operation. The meter displays pH, mV and temperature readings on a large LCD screen and automatically locks in stable readings.
Mechanics
Automatic or 1 to 3-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.
Benefits
- AUTO-READ function alerts the user and locks on-screen readings when stable
- Up to 3-point pH calibration
- Automatic recognition of USA/NIST and DIN buffers
- Easy to recall calibration slope data for procedure checks
- Non-volatile memory holds up to 50 data points
- Universal power supply or battery power option
- Includes (4) AA batteries to provide over 2000 hours of operation
- Universal power adapter (sold separately) runs meter on AC power
- IP67-rated waterproof housing (can be immersed up to one hour with no water incursion)
- 3-year meter warranty
- pH
- Range: -2.00 to 16.00
- Resolution: 0.1, 0.01
- Relative Accuracy: +/-0.01
- Calibration Points: Up to 3
- mV
- Range - mV: +/-1600.0 mV
- Range - RmV: +/-1999.9 mV
- Resolution: 0.1 mV
- Relative Accuracy: +/-0.2mV or 0.05%, whichever is greater
- Relative mV Calibration: Yes
- Temperature
- Range: -5 to 105 C
- Resolution: 0.1
- Relative Accuracy: +/-0.1 C
- Compensation: Auto or Manual
- Offset Calibration: Yes
- Datalogging
- Number of Points: 50
- Log Function: Manual, Automatic with AUTO-READ
- Log Edit: Delete last reading or all
- General
- Display: Custom LCD
- Inputs: pH Electrode - BNC, ATC Probe - 8-pin mini-DIN
- Power Adapter: Universal AC, 100-240 VAC
- Battery Power: 4 AAs, 2000 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, splashproof and dustproof
- Warranty: 36 months (from date of purchase)
Select Options
In The News
Choosing The Right Thermo Portable For Your Project
With so many options in Thermo Scientific’s Orion Star A line, it can be difficult to narrow down which meter will best fulfill a project’s needs. One easy way to rule out some meters is by considering application type. For projects that rely largely on collecting samples in the field, a portable meter is clearly the way to go. But there’s still a handful of meters to choose from. To simplify making the right choice, we spoke with Ricki Hartwell, the global product manager for Thermo Scientific’s Orion Laboratory and Field Instruments. She recently shared her tips on choosing the right Thermo benchtop. Let’s take a look at her recommendations for selecting the right portable meter.
Read More
Ocean acidification: University of Washington's giant plastic bags help control research conditions
With oceans becoming more acidic worldwide, scientists are getting creative in designing experiments to study them. For example, one group at the University of Washington is using giant plastic bags to study ocean acidification. Each bag holds about 3,000 liters of seawater and sits in a cylinder-like cage for stability. The group at UW, made up of professors and students, is controlling carbon dioxide levels in the bags over a nearly three-week period, during which they are looking at the effects of increased acidity on organisms living near the San Juan Islands. “These mesocosms are a way to do a traditional experiment you might do in a lab or classroom,” said Jim Murray, professor of oceanography at the University of Washington.
Read More
NOAA Alaska buoy network to monitor North Pacific ocean acidification
National Oceanic and Atmospheric Administration scientists detected signs of ocean acidification in the waters that hold the vulnerable and valuable fisheries of the North Pacific off the coast of Alaska, but they only had a snapshot of the action. “We know that in this place were important commercial and subsistence fisheries that could be at risk from ocean acidification,” said Jeremy Mathis, a NOAA Pacific Marine Environmental Laboratory researcher and professor at the University of Alaska Fairbanks. To understand how ocean acidification affects the North Pacific, NOAA scientists created a mooring network that collects constant in situ data on parameters contributing to acidification. They hope it will reveal seasonal trends and patterns left out by their snapshots.
Read More
