$354.00
SE
HANNA HI98130 acidity meter multiparameter pH-EC-TDS Measurement Instrument
0.00-14.00 pH0.00-10.00g/L(ppt)
Acidity pH: 0.00 to 14.00 pH, EC: 0.00 to 20.00 mS/cm, TDS: 0.00 to 10.00ppt (g/L) pH, EC, TDS quick switching automatic identification calibrate, widely used in education, scientific research, environmental protection, water treatment, agriculture, gardens, soil, etc.

$438.00
SE
Bante901P-CN Portable multiparameter STIP-scan
-2.000~20.000pH0~10ppt (max 200ppt)
CHINA electrode, high performance portable pH Conductivity Meter, contains 4 measurement functions, the instrument is suitable for outdoor measurement of pH, mV, conductivity and total dissolved solids (TDS) of samples.

$447.00
SE
Bante221-ORP Portable pH/ORP Meter E201 Plastic PH electrode + 501 Plastic ORP electrode
-2.000~20.000pH
High-precision portable ORP meter, optional relative and absolute mV measurement mode, the instrument is suitable for outdoor measurement of pH and Oxidation-reducton potential of samples, measurement accuracy: 0.2mV.

If you don't know how to choose "STIP-scan", please consult customer service.