The Apera Instruments SX736 is a versatile, portable meter designed for laboratory-quality measurements of pH, conductivity (EC), TDS, salinity, resistivity, and dissolved oxygen (DO) in all general water solutions. Its IP57-rated dust and water resistance and rugged design make it perfect for field use, even in harsh environments. The integrated memory function allows for storage and retrieval of 400 data sets.
The SX736 features high-performance electrodes like the 201T-S pH/Temp. electrode, which ensures fast and precise pH measurements with its lithium glass membrane and ceramic diaphragm. The 2301T-S BPB conductivity/temp. electrode is based on Brush-resistant Platinum Black (BPB) technology, providing precise measurements across a wide range (0-200 mS/cm). Both electrodes also support automatic temperature compensation (ATC) for accurate readings.
For DO measurements, the DO500 polarographic DO electrode is included, with 5-minute polarization and a response of 90% within 30 seconds. The meter is capable of precise, automatic temperature, salinity, and manual air pressure compensation for optimal results.
Key Features:
✔ Multi-parameter measurement – pH, conductivity (EC), TDS, salinity, resistivity, dissolved oxygen (DO)
✔ Fast and reliable results – Digital filter technology enhances response time and accuracy
✔ Memory storage – Stores up to 400 data sets for easy retrieval
✔ Field-ready design – IP57-rated dust and water resistance for harsh environments
✔ Quick and easy calibration – 1-3 point pH calibration and 1-point EC calibration
✔ Replaceable DO membrane cap – Includes 3 replacement membrane caps and matching refill solution
✔ Fast DO polarization – Only 5 minutes required for full polarization
✔ 3-year manufacturer’s warranty (6 months for electrodes)
Complete Set Includes:
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SX736 portable meter for pH, EC, TDS, salinity, resistivity, DO
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201T-S pH/Temp. electrode
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2301T-S conductivity/temp. electrode
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DO500 polarographic DO electrode
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Calibration solutions: pH 4.00, pH 7.00, pH 10.01 (50 ml each)
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1413 μS Conductivity calibration solution
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DO502 electrolyte solution for refilling
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3x DO503 membrane caps
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Polishing paper for electrode cleaning
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Manual
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2x AA batteries
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Screwdriver
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Robust carrying case
| Conductivity (EC) | |
| Accuracy | Device: ±1.0 F.S, Total: ±1.5% F.S |
|---|---|
| Electrode Constant | 0.1 / 1 / 10 cm-1 |
| Measuring Range | Conductivity: (0.00 to 19.99) μS/cm, (20.0 to 199.9) μS/cm (200 to 1999) μS/cm, (2.00 to 19.99) mS/cm (20.0 to 199.9) mS/cm TDS: (0 to 100) g/L; Salinity: (0 to 100) ppt Resistivity: (0 to 100) MΩ·cm |
| Reference Temperature | 25°C, 20°C, and 18°C |
| Resolution | 0.01/0.1/1 μS/cm; 0.01/0.1 mS/cm |
| Temp. Compensation | (0 to 50) °C (automatic) |
| Dissolved Oxygen (DO) | |
| Accuracy | ±0.30 mg/L (ppm), incl. Electrode error |
| Air Pressure Compensation | (66 to 200) kPa (manual) |
| Automatic Calibration | Air saturated with water; water saturated with air |
| Electrode Type | Polarographic |
| Resolution | 0.1/0.01 mg/L (ppm); 1/0.1 % |
| Response Time | ≤ 30s (90% response at 25°C) |
| Salinity compensation range | (0 to 45) ppt (automatic) |
| Temp. compensation | (0 to 45) °C (automatic) |
| More | |
| Data Storage | 400 data sets |
| Dimensions and Weight | Meter: (65×120×31) mm/180 g Complete set: (255×210×50) mm/1760 g |
| IP Rating | IP57 |
| Memory Values | Serial number, measured value, measuring unit and temperature |
| Power Supply | 2 AA batteries (1.5V x2) |
| Quality and safety certification | CE, ISO 9001:2015 |
| pH | |
| Accuracy | Instrument: ±0.01 pH; Total: ±0.02 pH |
| Input Current | ≤2×10-12 A |
| Input Impedance | ≥1×1012Ω |
| Measuring Range | (-2.00 to 19.99) pH |
| Resolution | 0.1/0.01 pH |
| Stability | ±0.01 pH/3h |
| Temp. Compensation | (0 to 100) °C (automatic) |
Everything is perfect. I would recommend!
