HANNA Instruments revolutionized pH measurement when they introduced the pHep® in 1986, an easy to use, accurate, pocket-sized, pH tester.
Today, the family of pH meters has expanded to include the inexpensive (Checker®), waterproof models (pHep® Waterproof) and lab-grade precision testers (Piccolo).
Checker® - Electronic "pH paper"
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Checker®1 |
Checker®2 |
Checker® |
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Range |
0.00 to 14.00 pH |
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Resolution |
0.01 pH |
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Accuracy @20°C |
± 0.2 pH |
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Calibration |
Manual: 2 points (7 and 4 or 10) |
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Electrode |
HI 1270 (included) |
HI 1207 (included) |
HI 1208 (included) |
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Batteries (life) |
2 x 1.4V / 3,000 hours of continuous use |
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Accessories |
Buffer Solutions:
HI 7007 (pH 7), HI 7004 (pH 4), and HI 7010 (pH 10).
Storage Solutions: HI 70300 | |
pHep® - Waterproof (IP 67)
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pHep® 4 |
pHep® 5 |
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Range |
0.0 - 14.0 pH
0.0 - 60.0°C ; 32 - 140°F |
0.00 - 14.00 pH
0.0 - 60.0°C; 32 - 140°F |
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Resolution |
0.1 pH
0.1°C ; 0.1°F |
0.01 pH
0.1°C ; 0.1°F |
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Accuracy |
± 0.1 pH
± 0.5°C ; ± 1°F |
± 0.05 pH
± 0.5°C ; ± 1°F |
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Spare Electrode |
HI 73127 |
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Calibration |
Automatic at 2 points |
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T° Compensation |
Automatic from 0 - 50°C |
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Batteries (life) |
4 x 1.5V / 350 hours
Auto Shut-off after 8 minutes |
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Accessories |
Buffer Solutions:
HI 7007 (pH 7), HI 7004 (pH 4), and HI 7010 (pH 10)
Storage Solution: HI 70300
Cleaning Solution: HI 7061 | |
COMBO - Waterproof pH & EC/TDS
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HI 98129 |
HI 98130 |
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Range |
0.00 - 14.0 pH
0 - 2000 ppm
0 - 3999 µS/cm
0.0 - 60.0°C ; 32.0 - 140.0°F |
0.00 - 14.0 pH
0.00 - 10.00 ppt
0.00 - 20.00 mS/cm
0.0 - 60.0°C ; 32.0 - 140.0°F |
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Resolution |
0.01 pH
1 ppm
1 µS/cm
0.1°C ; 1.0°F |
0.01 pH
0.01 ppt
0.01 mS/cm
0.1°C ; 1.0°F |
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Accuracy |
0.05 pH
±2% (ppm/µS/cm)
0.5°C ; 1°F |
0.05 pH
±2% (ppt/mS/cm)
0.5°C ; 1°F |
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Electrode |
pH: HI 73127 |
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Calibration |
pH: Automatic at 1 or 2 points
EC/TDS: Automatic at 1 point |
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T° Compensation |
pH: Automatic
EC/TDS: Manual with ß |
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Batteries (life) |
4 x 1.5V / 100 hours
Auto Shut-off after 8 minutes |
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Accessories |
pH Buffer Solutions:
HI 7007 (pH 7), HI 7004 (pH 4), and HI 7010 (pH 10)
Storage Solution: HI 70300
Cleaning Solution: HI 7061 |
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TDS Buffer Solutions:
HI 98129 = HI 7031 (1413 µS/cm)
HI 98130 = HI 7030 (12.88 mS/cm) | |
PICCOLO - Precision of a lab-grade pH Meter
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Piccollo |
Piccollo 2 |
Piccollo Plus |
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Range |
pH/°C |
1.00 to 13.00 pH |
1.00 to 13.00 pH |
1.00 to 13.00 pH/
0.0 to 70.0°C |
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Resolution |
pH/°C |
0.01 pH |
0.01 pH |
0.01 pH / 0.1°C |
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Accuracy@20°C |
pH/°C |
±0.01 pH |
±0.01 pH |
±0.01 pH / ±1°C |
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Calibration |
Manual: 2 points (zero and slope) |
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T° Compensation |
Automatic from 0 - 70°C |
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Electrode |
HI 1280
(included) |
HI 1290
(included) |
HI 1295
(included) |
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Batteries (life) |
3 x 1.4V / 100 hours of continuous use |
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Accessories |
Buffer Solutions:
HI 7007 (pH 7), HI 7004 (pH 4), HI 7010 (pH 10)
Storage Solution: HI 70300
Cleaning Solution: HI 7061 | |
ORP - Redox Potential Tester
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ORP |
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Range |
±999 mV |
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Resolution |
1 mV |
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Accuracy @ 20°C |
±5 mV |
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Batteries (life) |
4 x 1.4V / 700 hours of continuous use |
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Accessories |
Pre-treatment Solutions: HI 7091 or HI7092
Test Solution: HI 7020
Storage Solution: HI 70300 | |