HI1285-5 – pH/EC/TDS Multiparameter Probe

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The HI1285-5 is a 3-in-1 pre-amplified multiparameter probe that measures pH, EC/TDS, and temperature within a single polypropylene body. The pH portion of this probe is constructed with a cloth junction, maintenance-free polymer gel electrolyte, and a low-temperature glass sensing bulb. The EC/TDS portion of this probe utilizes two stainless steel pins for an amperometric determination of conductivity and total dissolved solids. A built-in temperature sensor ensures that both pH and EC/TDS readings are compensated for temperature variations in both standards and samples. The design consideration for the HI1285-5 is ideal for measuring the pH, EC/TDS, and temperature in greenhouses, hydroponics, environmental monitoring, water treatment, and boilers and cooling towers. The HI1285-5 is designed for use with Hanna’s HI9813-5, HI9812-5, and HI9811-5 portable multiparameter meters.

Pre-amplified pH electrode
Amperometric EC/TDS sensor
Built-in temperature sensor

Reference Cell Type	single, Ag/AgCl
Junction Type/Flow Rate	cloth
Type of Electrolyte	gel
Body Material	polypropylene
Glass Type	LT
Tip / Shape	spheric (8 mm)
Matching Pin	no
Max. Pressure	0.1 bar
Optimum pH Range	0 to 13
Temperature Operating Range	0 to 50°C (32 to 122°F)
Body Length/Overall Length	95 mm / 185 mm
Temperature Sensor	yes
Outer Diameter	16 mm
Cable	7-pole; 1 m (3.3′)
Connector Type	DIN
Amplifier	yes
Recommended Use	Greenhouses, hydroponics, environmental monitoring, water treatment, boilers, cooling towers