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Take simple, routine pH, mV and temperature measurements with the Thermo Scientific™ Orion Star™ A121 Portable pH Meter. This meter is an easy-to-use and budget-friendly instrument for basic pH analysis in the field. Perform up to a 3 point pH calibration with easy recall of calibration points and slope. Quickly navigate setup menus and ensure consistent calibrations using the simple keypad layout and on-screen text prompts. This waterproof meter has an IP67-rated housing for rugged protection in outdoor environments.
Accuracy (Temperature) | ±0.1°C |
Accuracy (mV) | ±0.2 or ±0.05%, whichever is greater |
Accuracy (pH) | ±0.01 |
Data Management Details | Internal Data Point Memory |
Description | Orion Star A121 portable pH meter |
Outputs | None |
Includes | Star A121 pH meter, 4 AA batteries |
Measurement Modes | pH, mV, Relative mV with Temperature |
Calibration | pH, relative mV (RmV) and temperature |
Range (pH) | -2 to 16 |
Resolution (pH) | 0.01, 0.1 |
Range (mV) | ±1600.0 |
Resolution (mV) | 0.1mV |
Calibration Points | 1 to 3 |
Temperature Range (Metric) | -5°C to +105°C |
Temperature Range (English) | 22.0°F to 221.0°F |
Resolution (Temperature) | 0.1°C, 0.1°F |
Temperature Selection | Manual or automatic with ATC temperature probe |
Temperature Probe Calibration | 1 point temperature offset calibration |
Display Type | LCD |
Memory | Non-volatile memory preserves log and settings |
Data Points | 50 |
Log Function Type | Automatic with Auto-Read Measure Mode, Manual with Continuous Measure Node |
Inputs | BNC (pH or ORP electrode), 8 pin MiniDIN (ATC temperature probe) |
Certifications/Compliance | CE, TUV 3-1, FCC Class A |
IP Rating | IP-67 |
AC Adapter | Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003) |
Dimensions (L x W x H) | 24 cm x 10 cm x 6.5 cm (9.5 in. x 3.9 in. x 2.6 in.) |
Weight (Metric) | 0.5 kg |
Weight (English) | 2 lb. |
Warranty | 3 Year Meter Warranty |
Keypad | Simple with highlighted measure key, scroll and shortcut keys |
Model | Orion Star A121 Portable pH/mV/RmV/Temperature Meter |
Power Supply | 4 AA batteries (included) or universal AC adapter (sold separately) |
Probe Type | pH electrode, ORP electrode, ATC temperature probe (purchase separately) |
Languages | English |
Range (Relative mV) | ±1999.9mV |
Relative Humidity Range | 5 to 85%, non-condensing |
Isopotential Point | 7.00pH |
Stability | Smart Stability and Smart Averaging |
Temperature (English) Operating | 41°F to 113°F (ambient) |
Temperature (Metric) Operating | 5°C to 45°C (ambient) |
Channels | 1 |
Battery Type | 4 x AA |
Battery Life | 2000 hr. |
Unit Size | Each |
Accuracy (Temperature) | ±0.1°C |
Accuracy (mV) | ±0.2 or ±0.05%, whichever is greater |
Accuracy (pH) | ±0.01 |
Data Management Details | Internal Data Point Memory |
Description | Orion Star A121 portable pH meter standard kit with general purpose pH/ATC electrode |
Outputs | None |
Includes | Star A121 pH meter, 9107BNMD gel-filled epoxy-body pH/ATC electrode, 916099 pH buffer kit, protective meter armor, hard-sided carrying case, 4 AA batteries |
Measurement Modes | pH, mV, Relative mV with Temperature |
Calibration | pH, relative mV (RmV) and temperature |
Range (pH) | -2 to 16 |
Resolution (pH) | 0.01, 0.1 |
Range (mV) | ±1600.0 |
Resolution (mV) | 0.1mV |
Calibration Points | 1 to 3 |
Temperature Range (Metric) | -5°C to +105°C |
Temperature Range (English) | 22.0°F to 221.0°F |
Resolution (Temperature) | 0.1°C, 0.1°F |
Temperature Selection | Manual or automatic with ATC temperature probe |
Temperature Probe Calibration | 1 point temperature offset calibration |
Display Type | LCD |
Memory | Non-volatile memory preserves log and settings |
Data Points | 50 |
Log Function Type | Automatic with Auto-Read Measure Mode, Manual with Continuous Measure Node |
Inputs | BNC (pH or ORP electrode), 8 pin MiniDIN (ATC temperature probe) |
Certifications/Compliance | CE, TUV 3-1, FCC Class A |
IP Rating | IP-67 |
AC Adapter | Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003) |
Dimensions (L x W x H) | 24 cm x 10 cm x 6.5 cm (9.5 in. x 3.9 in. x 2.6 in.) |
Weight (Metric) | 0.5 kg |
Weight (English) | 2 lb. |
Warranty | 3 Year Meter Warranty |
Keypad | Simple with highlighted measure key, scroll and shortcut keys |
Model | Orion Star A121 Portable pH/mV/RmV/Temperature Meter |
Power Supply | 4 AA batteries (included) or universal AC adapter (sold separately) |
Probe Type | pH electrode, ORP electrode, ATC temperature probe (includes 9107BNMD Orion Triode pH/ATC electrode) |
Languages | English |
Range (Relative mV) | ±1999.9mV |
Relative Humidity Range | 5 to 85%, non-condensing |
Isopotential Point | 7.00pH |
Stability | Smart Stability and Smart Averaging |
Temperature (English) Operating | 41°F to 113°F (ambient) |
Temperature (Metric) Operating | 5°C to 45°C (ambient) |
Channels | 1 |
Battery Type | 4 x AA |
Battery Life | 2000 hr. |
Unit Size | Each |
Catalog Number | Specifications | Unit Size | Description | Includes | Price (TWD) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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STARA1210 | Each | Orion Star A121 portable pH meter | Star A121 pH meter, 4 AA batteries | Request A Quote | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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STARA1215 | Each | Orion Star A121 portable pH meter standard kit with general purpose pH/ATC electrode | Star A121 pH meter, 9107BNMD gel-filled epoxy-body pH/ATC electrode, 916099 pH buffer kit, protective meter armor, hard-sided carrying case, 4 AA batteries | Request A Quote | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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