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- Category: Water Quality Meters

The EC500 is a Conductivity, TDS, and Temperature meter. Using a single electrode, it measures five parameters: conductivity, TDS, salinity, pH and temperature. Analog bar graphs show trends. Memory can store up to 25 labeled readings. Waterproof meter with a high-precision multi-range sensor. Auto Power Off with Disable. Comes with meter and electrode, safety lid, sample cup, four 3V CR-2032 batteries, and a 48" (1.2m) neckstrap.
Conductivity | 0 to 199µS/cm, 200 to 1999µS/cm, 2.00 to 19.99mS/cm |
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Conductivity Basic Accuracy | ±2% full scale |
Conductivity Max Resolution | 0.1µS/cm |
Memory | 25 datasets |
pH | 0.00 to 14.00pH |
pH Basic Accuracy | ±0.01pH |
pH Max Resolution | 0.01pH |
TDS | 0 to 99.9ppm (mg/L), 100 to 999ppm (mg/L), 1.00 to 9.99ppt |
TDS Basic Accuracy | ±2% full scale |
TDS Max Resolution | 0.1ppm (mg/L) |
Temperature (Contact) | 23° to 194°F (-5 to 90°C) |
Temperature (Contact) Basic Accuracy | ±1.8°F/1°C |
Temperature (Contact) Max Resolution | 0.1°F/°C |
Certifications | CE |
Dimensions | 1.4 × 6.8 × 1.6" (35.6 × 172.7 × 40.6mm) |
IP Rating | IP57 |
Power | 4 × CR-2032 (3V) batteries |
Warranty | 2 years |
Weight | 3.8oz (110g) |
- Details
- Category: Water Quality Meters

The Extech EC405 is an ExStik® replacement conductivity cell module. For use with the EC400 Conductivity, TDS, and Salinity Meter. It is a durable and easy-to-clean conductivity cell module. The product comes with a protected connector cap and a one-year warranty.
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- Category: Water Quality Meters

The Extech EC400 ExStik® has six units of measurement, inbuilt memory that records up to 15 labeled values for easy recall, an adjustable conductivity to TDS ratio factor ranging from 0.4 to 1.0, and self-calibration when powered on. The EC400 uses cutting-edge microprocessor chip technology and unique sensor technologies to simultaneously detect conductivity, TDS, salinity, and temperature. With the push of a button, the EC400 provides the flexibility of adjustable cell constants, making testing fast, accurate, and repeatable. Includes meter and conductivity cell, safety lid, sample cup, four CR2032 batteries, and a 48" (1.2m) neckstrap.
Conductivity | 0 to 199.9µS/cm, 200 to 1999µS/cm, 2.00 to 19.99mS/cm |
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Conductivity Basic Accuracy | ±2% FS |
Conductivity Max Resolution | 0.1µS/cm, 1µS/cm, 0.01mS/cm |
Salinity | 0 to 99.9ppm (mg/L), 100 to 999ppm (mg/L), 1.00 to 9.99ppt (g/L) |
Salinity Basic Accuracy | ±2% FS |
Salinity Max Resolution | 0.1ppm (mg/L), 1ppm (mg/L), 0.01ppt (g/L) |
TDS | 0 to 99.9ppm (mg/L), 100 to 999ppm (mg/L), 1.00 to 9.99ppt (g/L) |
TDS Basic Accuracy | ±2% FS |
TDS Max Resolution | 0.1ppm (mg/L), 1ppm (mg/L), 0.01ppt (g/L) |
Temperature (Contact) | 32° to 149°F (0 to 65°C) |
Temperature (Contact) Basic Accuracy | ±1.8°F/1°C |
Temperature (Contact) Max Resolution | 0.1°F/°C |
Certifications | CE |
Dimensions | 1.4 × 6.8 × 1.6" (35.6 × 172.7 × 40.6mm) |
IP Rating | IP57 |
Power | 4 × CR-2032 (3V) button batteries |
Warranty | 2 years |
Weight | 3.8oz (110g) |
- Details
- Category: Water Quality Meters

The Extech EC210 is a tiny, handheld conductivity meter. The long-lasting carbon rod combination electrode monitors conductivity, TDS, and temperature. To ensure accuracy, the meter has three conductivity and TDS ranges, as well as an adjustable temperature adjustment factor. The units of measurement include µS/cm, mS/cm, ppm, °F, and °C.
Conductivity | 2000µS/cm, 20mS/cm, 100mS/cm |
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Conductivity Basic Accuracy | ±2% full scale |
Conductivity Max Resolution | 1µS/cm, 0.01mS/cm, 0.1mS/cm |
TDS | 1200ppm, 12,000ppm, 66,000ppm |
TDS Basic Accuracy | ±2% FS |
TDS Max Resolution | 1ppm, 10ppm, 100ppm |
Temperature (Contact) | 32 to 122°F (0 to 50°C) |
Temperature (Contact) Basic Accuracy | ±1.5°F/0.8°C |
Temperature (Contact) Max Resolution | 0.1°F/°C |
Certifications | CE |
Dimensions | 5.3 × 2.4 × 1.3" (135 × 60 × 33mm) |
Power | 1 × 9V battery |
Warranty | 2 years |
Weight | 10.4oz (295g) |