HANNA HI 2550 pH/ ORP/ ISE/ EC/ TDS/ NaCl .... reading ( Â ± 0.05 Â µ S/ cm or 1 digit, whichever greater) â € ¢ TDS : Â ± 1% of reading ( Â ± 0.03 ppm or 1 digit, whichever greater) â € ¢ NaCl : Â ± ....
HANNA HI 93703 Portable Logging Turbidity Meter .... Accuracy :  ± 0.5 FTU or  ± 5% of reading ( whichever is greater) Calibration : 3 points ( 0 FTU, 10 FTU and 500 FTU) Light Source : infrared....
HANNA HI 98201 ORP Tester â € ¢ Renewable .... destroy contaminants. The higher the ORP value, the greater the sanitizing power of your water. HI 98201 is ideal for swimming pools and spas and....
HANNA HI 991301 Portable pH/ EC/ TDS/ Temperature .... will work best with your range of conductivity for greater precision. There are only 2 buttons, yet you can select from a range of....