Hanna* Multirange TDS Meter

Three ranges of measurement assure the highest accuracy possible. All three ranges can be executed at the touch of a button without changing the conductivity probe. Manual temperature compensation, manual single-point calibration. The four-ring potentiometric probe is made of rugged PVC for the best protection in the field and is supplied with a one meter (3.3 foot) cable to access those hard to reach areas. The ratio between conductivity and TDS is factory-calibrated at 0.5 (CaCO3 value). Operates on one 9V battery (included) for approximately 100 hours. Weighs just 13 oz.
Specifications:
3 TDS Ranges: 0.0 - 199.9 mg/L, Resolution: 0.1 mg/L;
0 - 1999 mg/L, Resolution: 1 mg/L;
0.00 - 19.99 g/L, Resolution: 0.01 g/L;
Accuracy: ±;1% full scale.