Clarkson Laboratory and Supply Established 1928
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Oakton pH Meters & Testers Information

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

 
Catalog Number Product Accuracy ATC Calibration Electrode Resolution
WD-35425-00WD-35425-00 Waterproof Multiparameter PC Testr 35 Waterproof Multiparameter PC Testr 35 pH: ±0.1 pH
Conductivity: ±1% full-scale
Temperature: ±0.5°C, ±0.9°F
Yes pH: 5 points
Conductivity: 3 points
Temperature: 1 point
Replaceable
pH: single-junction
Conductivity/TDS/salinity: dual-pin stainless steel
pH: 0.1 pH
Conductivity: 10 uS, 0.1 mS
Temperature: 0.1°
WD-35425-05WD-35425-05 Waterproof Multiparameter PT Testr 35 Waterproof Multiparameter PT Testr 35

(Note: Discontinued
item Replaced by WD-35425-05)
pH: ±0.01 pH
TDS: ±1% full-scale
Temperature: ±0.5°C, ±0.9°F
Yes pH: 5 points
TDS: 2 points
Temperature: 1 point
Replaceable
pH: single-junction
Conductivity/TDS/salinity: dual-pin stainless steel
pH: 0.01 pH
TDS: 1 ppm; 0.01 ppt
Temperature: 0.1°
WD-35634-10WD-35634-10 Waterproof Double Junction pHTestr® 10 Waterproof Double Junction pHTestr® 10


(Note: Discontinued
item Replaced by WD-35634-30)
±0.1 pH Yes Up to three points US or NIST buffers (4.0, 6.86/7.0, 9.18/10.0) Replaceable double junction 0.1 pH
WD-35425-10WD-35425-10 Waterproof Multiparameter PCS Testr 35 Waterproof Multiparameter PCS Testr 35

(Note: Discontinued
item Replaced by WD-35634-35)
pH: ±0.1 pH
Conductivity: ±1% full-scale
TDS: ±1% full-scale
Salinity: ±1% full-scale
Temperature: ±0.5°C, ±0.9°F
Yes pH: 5 points
Conductivity: 3 points
TDS: 3 points
Salinity: 1 point
Temperature: 1 point
Replaceable
pH: single-junction
Conductivity/TDS/salinity: dual-pin stainless steel
pH: 0.1 pH
Conductivity: 10 uS, 0.1 mS
TDS: 0.1 ppm, 1 ppm; 0.01 ppt
Salinity: 0.1 below 100 ppm/1 ppm above
Temperature: 0.1°
WD-35634-20WD-35634-20 Waterproof Double Junction pHTestr® 20 Waterproof Double Junction pHTestr® 20

(Note: Discontinued
item Replaced by WD-35634-30)
±0.01 pH Yes Up to 3 points US or NIST (4.01, 6.86/7.00, 9.18/10.00) Replaceable double junction 0.01 pH
WD-35634-30WD-35634-30 Waterproof Double Junction pHTestr® 30 Waterproof Double Junction pHTestr® 30 ±0.01 pH Yes Up to three points US or NIST(4.01, 6.86/7.00, 9.18/10.00) Replaceable double junction 0.01 pH
WD-35634-40WD-35634-40 pH Spear pH Spear


(Note: Discontinued
item Replaced by WD-35634-40)


±0.01 None Up to 3 points; selectable buffers USA - pH 4.01, 7.00, 10.01; NIST - pH 4.01, 6.86, 9.18 Replaceable spear tip double junction 0.01
WD-35650-10
WD-35650-14
WD-35650-10 and WD-35650-14 Waterproof ORPTestr® 10
Waterproof ORPTestr® 10

(Note: Discontinued
item Replaced by WD- 35634-45)

±2 mV None ±150 mV Platinum band 1 mV
WD-35634-14WD-35634-14 WP pHTestr® 10 BNC WP pHTestr® 10 BNC ±0.01 No Up to 3 points Not included 0.01
 
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