Hanna Instruments pH/EC/TDS Multiparameter Probe with CAL Check - HI1285-6 ORP electrode uncontaminated calibration every time for

uncontaminated calibration every time for optimal meter accuracy in hydroponics

the resistance would increase above the optimum resistance for the high impedance input of a pH meter

SE220 lab-grade double junction gel-filled pH electrode (included)

02 pH accuracy — lab-grade precision

less clogging"

Hanna Instruments pH/EC/TDS Multiparameter Probe with CAL Check - HI1285-6 ORP electrode uncontaminated calibration every time forMeasure pH, conductivity (EC), and TDS (ppm) with the HI1285 6 multiparameter probe. Perfect for measurements in greenhouses, water treatment, and boilers and cooling towers with a polypropylene body, built in temperature sensor, and pre amplified pH electrode. The HI1285 6 is designed for use with HI9813 6 Portable pH EC TDS Temperature Meter with CAL Check. 3 in 1 probe with pH, conductivity (EC), TDS (ppm), & temperature sensors. Pre amplified for