Oakton (WD-35634-30) Waterproof pH Tester +0.01 pH Accuracy; ATC
Waterproof pH Tester WD-35634-30
Laboratory-grade ±0.01 pH accuracy in a pocket-sized waterproof instrument with replaceable double junction electrode and automatic temperature compensation
Built for field professionals who need precision in any environment
High Precision Measurement
±0.01 pH accuracy meets ASTM and EPA test procedure requirements. Simultaneous pH and temperature display on single large readout for complete data at a glance.
Double Junction Electrode
Replaceable double junction design handles dirty water, heavy sulfides, tris buffers, and organics. Increased reference gel volume extends electrode life significantly beyond standard testers.
IP67 Rated Protection
Waterproof and dustproof housing floats if dropped in water. Built to survive rugged field and plant environments where standard meters fail.
Replaceable Sensor System
Replace only the electrode when needed, reuse the meter body. Saves money over time and reduces waste compared to disposable testers.
Automatic Temperature Compensation
ATC adjusts pH readings based on solution temperature for accurate results across 0 to 50°C operating range. Three-point push-button calibration accepts US or NIST buffers.
Oakton WD-35634-30 Technical Details
| Model Number | WD-35634-30 |
| pH Range | -10.00 to 15.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy | ±0.01 pH |
| Calibration | Up to three points (US or NIST: 4.01, 6.86/7.00, 9.18/10.00) |
| Electrode Type | Replaceable double junction |
| Temperature Display | °C readout |
| ATC | Yes, automatic temperature compensation |
| Protection Rating | IP67 waterproof and dustproof |
| Operating Temperature | 0 to 50°C |
| Power Source | Four 1.5V batteries (500+ hour life) |
| Dimensions | 6.5" x 1.5" diameter (15.5 x 3.8 cm) |
| Weight | 4.5 oz (125 g) |
Application Range
The Oakton WD-35634-30 Waterproof pH Tester is suitable for most ASTM and EPA test procedures. The double junction electrode design makes it particularly effective for testing dirty water, wastewater, solutions containing heavy sulfides, tris buffers, heavy metals, and organic contaminants where standard single junction electrodes may fail or provide inconsistent readings. Compatible with standard US buffer solutions (pH 4.01, 7.00, 10.00) and NIST buffer solutions (pH 4.01, 6.86, 9.18) for calibration flexibility.
Service Schedule for Accurate Testing
Calibration Check
Verify calibration with reference buffer solution. Perform three-point calibration when testing critical samples or if readings drift from known standards.
Electrode Rinse
Rinse electrode thoroughly with distilled water. Store in proper storage solution to maintain junction integrity and reference gel hydration.
Electrode Replacement
Replace double junction electrode when response time slows, readings become erratic, or calibration no longer holds. Reuse meter body to reduce costs.
Battery Replacement
Replace four 1.5V batteries when low battery indicator appears or display dims. Typical battery life exceeds 500 hours of continuous use.
EPA Compliant Testing
Meets accuracy requirements for most ASTM and EPA test procedures
Waterproof pH Tester WD-35634-30
Laboratory-grade ±0.01 pH accuracy in a pocket-sized waterproof instrument with replaceable double junction electrode and automatic temperature compensation
Built for field professionals who need precision in any environment
High Precision Measurement
±0.01 pH accuracy meets ASTM and EPA test procedure requirements. Simultaneous pH and temperature display on single large readout for complete data at a glance.
Double Junction Electrode
Replaceable double junction design handles dirty water, heavy sulfides, tris buffers, and organics. Increased reference gel volume extends electrode life significantly beyond standard testers.
IP67 Rated Protection
Waterproof and dustproof housing floats if dropped in water. Built to survive rugged field and plant environments where standard meters fail.
Replaceable Sensor System
Replace only the electrode when needed, reuse the meter body. Saves money over time and reduces waste compared to disposable testers.
Automatic Temperature Compensation
ATC adjusts pH readings based on solution temperature for accurate results across 0 to 50°C operating range. Three-point push-button calibration accepts US or NIST buffers.
Oakton WD-35634-30 Technical Details
| Model Number | WD-35634-30 |
| pH Range | -10.00 to 15.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy | ±0.01 pH |
| Calibration | Up to three points (US or NIST: 4.01, 6.86/7.00, 9.18/10.00) |
| Electrode Type | Replaceable double junction |
| Temperature Display | °C readout |
| ATC | Yes, automatic temperature compensation |
| Protection Rating | IP67 waterproof and dustproof |
| Operating Temperature | 0 to 50°C |
| Power Source | Four 1.5V batteries (500+ hour life) |
| Dimensions | 6.5" x 1.5" diameter (15.5 x 3.8 cm) |
| Weight | 4.5 oz (125 g) |
Application Range
The Oakton WD-35634-30 Waterproof pH Tester is suitable for most ASTM and EPA test procedures. The double junction electrode design makes it particularly effective for testing dirty water, wastewater, solutions containing heavy sulfides, tris buffers, heavy metals, and organic contaminants where standard single junction electrodes may fail or provide inconsistent readings. Compatible with standard US buffer solutions (pH 4.01, 7.00, 10.00) and NIST buffer solutions (pH 4.01, 6.86, 9.18) for calibration flexibility.
Service Schedule for Accurate Testing
Calibration Check
Verify calibration with reference buffer solution. Perform three-point calibration when testing critical samples or if readings drift from known standards.
Electrode Rinse
Rinse electrode thoroughly with distilled water. Store in proper storage solution to maintain junction integrity and reference gel hydration.
Electrode Replacement
Replace double junction electrode when response time slows, readings become erratic, or calibration no longer holds. Reuse meter body to reduce costs.
Battery Replacement
Replace four 1.5V batteries when low battery indicator appears or display dims. Typical battery life exceeds 500 hours of continuous use.
EPA Compliant Testing
Meets accuracy requirements for most ASTM and EPA test procedures
Original: $319.97
-65%$319.97
$111.99Description
Waterproof pH Tester WD-35634-30
Laboratory-grade ±0.01 pH accuracy in a pocket-sized waterproof instrument with replaceable double junction electrode and automatic temperature compensation
Built for field professionals who need precision in any environment
High Precision Measurement
±0.01 pH accuracy meets ASTM and EPA test procedure requirements. Simultaneous pH and temperature display on single large readout for complete data at a glance.
Double Junction Electrode
Replaceable double junction design handles dirty water, heavy sulfides, tris buffers, and organics. Increased reference gel volume extends electrode life significantly beyond standard testers.
IP67 Rated Protection
Waterproof and dustproof housing floats if dropped in water. Built to survive rugged field and plant environments where standard meters fail.
Replaceable Sensor System
Replace only the electrode when needed, reuse the meter body. Saves money over time and reduces waste compared to disposable testers.
Automatic Temperature Compensation
ATC adjusts pH readings based on solution temperature for accurate results across 0 to 50°C operating range. Three-point push-button calibration accepts US or NIST buffers.
Oakton WD-35634-30 Technical Details
| Model Number | WD-35634-30 |
| pH Range | -10.00 to 15.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy | ±0.01 pH |
| Calibration | Up to three points (US or NIST: 4.01, 6.86/7.00, 9.18/10.00) |
| Electrode Type | Replaceable double junction |
| Temperature Display | °C readout |
| ATC | Yes, automatic temperature compensation |
| Protection Rating | IP67 waterproof and dustproof |
| Operating Temperature | 0 to 50°C |
| Power Source | Four 1.5V batteries (500+ hour life) |
| Dimensions | 6.5" x 1.5" diameter (15.5 x 3.8 cm) |
| Weight | 4.5 oz (125 g) |
Application Range
The Oakton WD-35634-30 Waterproof pH Tester is suitable for most ASTM and EPA test procedures. The double junction electrode design makes it particularly effective for testing dirty water, wastewater, solutions containing heavy sulfides, tris buffers, heavy metals, and organic contaminants where standard single junction electrodes may fail or provide inconsistent readings. Compatible with standard US buffer solutions (pH 4.01, 7.00, 10.00) and NIST buffer solutions (pH 4.01, 6.86, 9.18) for calibration flexibility.
Service Schedule for Accurate Testing
Calibration Check
Verify calibration with reference buffer solution. Perform three-point calibration when testing critical samples or if readings drift from known standards.
Electrode Rinse
Rinse electrode thoroughly with distilled water. Store in proper storage solution to maintain junction integrity and reference gel hydration.
Electrode Replacement
Replace double junction electrode when response time slows, readings become erratic, or calibration no longer holds. Reuse meter body to reduce costs.
Battery Replacement
Replace four 1.5V batteries when low battery indicator appears or display dims. Typical battery life exceeds 500 hours of continuous use.
EPA Compliant Testing
Meets accuracy requirements for most ASTM and EPA test procedures
