Clarkson Laboratory and Supply Established 1928
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Oakton pH / ORPTestrs Information

Click on the links below for more information and prices. E-mail sales@clarksonlab.com for additional help, discounts and to place orders.
Price List

Catalog Number Product Accuracy ATC Calibration Electrode Resolution
WD-35423-01
EW-35423-01

WD-35423-01 EcoTestr pH2+ Pocket Meter
EcoTestr pH2+ Pocket Meter ±0.1 pH Yes Up to 3 points - 0.1 pH
WD-35634-05
EW-35634-05

WD-35634-05 EcoTestr pH1 Waterproof Pocket Tester
EcoTestr pH1 Waterproof Pocket Tester ±0.1 pH Yes Up to three points - 0.1 pH
WD-35634-16
WD-35634-18
EW-35634-16
EW-35634-18


WD-35634-16 pHTestr 5 Waterproof Pocket Tester
pHTestr 5 Waterproof Pocket Tester ±0.01 pH ±1 digit Yes 1 to 3 points - 0.01 pH

WD-35634-15
WD-35634-17
EW-35634-15
EW-35634-17

WD-35634-15 pHTestr 50 Waterproof Pocket pH Tester, Premium 50 Series

pHTestr 50 Waterproof Pocket pH Tester, Premium 50 Series ±0.01 pH Yes Up to 3 points - 0.01 pH

WD-35634-25
WD-35634-27
EW-35634-25
EW-35634-27

WD-35634-25 pHTestr 50S Spear-Tip Waterproof Pocket Tester, Premium 50 Series

pHTestr 50S Spear-Tip Waterproof Pocket Tester, Premium 50 Series ±0.01 pH Yes Up to three points - 0.01 pH

WD-35634-45
WD-35634-47
EW-35634-45
EW-35634-47

WD-35634-45 ORPTestr 50 Waterproof Pocket ORP Tester, Premium 50 Series

ORPTestr 50 Waterproof Pocket ORP Tester, Premium 50 Series ±2 mV Yes ±200 mV offset adjustment - 1 mV

WD-35634-35
WD-35634-37
EW-35634-35
EW-35634-37

WD-35634-35 PCTSTestr 50 Waterproof Pocket pH/Cond/TDS/Salinity Tester, Premium 50 Series

PCTSTestr 50 Waterproof Pocket pH/Cond/TDS/Salinity Tester, Premium 50 Series pH: ±0.01
TDS: ±1% FS
Conductivity: ±1% full scale
Temperature: 0 to 50°C (±0.5°C/±0.9°F); 50 to 60°C (±1.0°C/±1.8°F)
Yes Up to three points - pH: 0.01
TDS: 10 ppt
Sanlinity: 0l01 ppt Temperature: 0.1°C/0.1°F
WD-35634-30
EW-35634-30

WD-35634-30 pHTestr 30 Waterproof Pocket Tester
pHTestr 30 Waterproof Pocket Tester ±0.01 pH Yes Up to three pH points - 0.01 pH

WD-35634-54
WD-35634-58
EW-35634-54
EW-35634-58

WD-35634-54 ORPTestr 5 Waterproof Pocket Tester

ORPTestr 5 Waterproof Pocket Tester ±0.2% full-scale Yes 1 point - 1 mV

WD-35634-46
WD-35634-48
EW-35634-46
EW-35634-48

WD-35634-46 pHTestr 5F Flat-Tip Waterproof Pocket Tester

pHTestr 5F Flat-Tip Waterproof Pocket Tester ±0.01 pH ±1 digit Yes 1 to 3 points - 0.01 pH

WD-35634-52
WD-35634-56
EW-35634-52
EW-35634-56

WD-35634-52 pHTestr 5S Spear-Tip Waterproof Pocket Tester

pHTestr 5S Spear-Tip Waterproof Pocket Tester ±0.01 pH ±1 digit Yes 1 to 3 points - 0.01 pH

WD-35634-60
WD-35634-62
EW-35634-60
EW-35634-62

WD-35634-60 PCTSTestr 5 Waterproof Pocket Tester

PCTSTestr 5 Waterproof Pocket Tester ±0.01 pH, ±1 digit, ±1% full scale (Conductivity, TDS & Salinity) Yes 1 to 3 points - 0.01 pH, 0.1 µS/cm, 1 µS/cm, 0.01 mS/cm (Conductivity), 0.1 ppm, 1 ppm, 0.01 ppt (TDS), 0.01 ppt (Salinity)
Discontinued pH Testrs - - - - -

Price List