Extech EC500 ExStik II Waterproof 5-in-1 pH / Conductivity / TDS / Salinity / Temperature Meter
The Extech EC500 ExStik II is a high-precision, 5-in-1 multi-parameter water quality tester engineered for laboratory, industrial, and field testing applications. Utilizing a combination flat-surface pH electrode and auto-ranging conductivity cell, this rugged handheld device measures pH, Conductivity, Total Dissolved Solids (TDS), Salinity, and Temperature using a single probe head.
Built to withstand demanding environments, its IP57-rated waterproof housing protects the unit against moisture and dust. The clear digital display features an analog bar graph to track measurement trends easily, while internal memory stores up to 25 labeled datasets for simple data logging. Automatic temperature compensation ensures high testing accuracy across environmental variations.
5-in-1 Testing Capabilities: Measures pH, Conductivity, Total Dissolved Solids (TDS), Salinity, and Temperature with 9 selectable measurement units.
Flat Surface Combination Sensor: Flat pH electrode design allows for measurements in liquids, semi-solids, or small sample droplets.
Waterproof IP57 Housing: Rugged, drop-resistant build designed to withstand field, wastewater, or agricultural testing conditions.
Smart Memory & Analog Bargraph: Integrated LCD screen displays real-time trend bar graphs and stores up to 25 recallable reading sets.
RENEW & Calibration Alerts:
Auto-Ranging Precision: Automatically adjusts measurement ranges for conductivity and TDS to deliver optimal resolution.
| Feature | Specification |
| Model | Extech EC500 ExStik II |
| pH Range / Accuracy | 0.00 to 14.00 pH / ±0.01 pH |
| Conductivity Range | 0 to 199.9 µS/cm, 200 to 1999 µS/cm, 2.00 to 19.99 mS/cm |
| TDS / Salinity Range | 0 to 99.9 ppm (mg/L), 100 to 999 ppm, 1.00 to 9.99 ppt |
| Temperature Range | -5°C to 90°C (23°F to 194°F) |
| Basic Accuracy | ±2% Full Scale (Conductivity/TDS/Salinity), ±1°C (Temp) |
| Data Memory | Up to 25 labeled datasets |
| IP Rating | IP57 Waterproof |
| Power Source | 4 x CR2032 3V Lithium Button Batteries |
| Dimensions / Weight | 36 mm x 186 mm x 41 mm / ~110 g |
1 x Extech EC500 ExStik II Meter Unit
1 x Combination pH/Conductivity Sensor Module
1 x Protective Sensor Cap
1 x Sample Cup with Cap
4 x CR2032 Batteries
1 x Neckstrap (1.2 m)