Model Number: ez-9909<br> Display Type: Digital With Backlight<br> Backlight: YES<br> Multi-functional water quality tester<br> Conductivity measurement range: 0 to 10000 uS/cm, 10.01-19.99 ms, 20.1-400 ms/cm<br> Accuracy: ±2% of the reading<br> TDS measurement range: 0 to 1000 ppm, 1000 ppm to 10000 ppm, 10.1 to 200.0 PPT<br> Salinity measurement range: 0.00 to 25.00%<br> Resolution: 0.01%<br> pH measurement range: 0.01-14.00 pH<br> Resolution: 0.01 pH<br> Accuracy: ±0.05 pH<br> Color: As shown<br> Material: Plastic<br> Package Contents: 1 x 5-in-1 Water Quality Tester (with backlight)<br> 1 x English Manual<br> Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.