Replacement Probe for Hanna HI9813-6N Waterproof pH/EC/TDS Meter

When to Fit a Hanna Replacement pH Probe A meter body rarely fails outright. The glass wears, the junction clogs, and calibration starts drifting, and that is the probe rather than the electronics. This one carries a pre-amplified pH electrode, so the signal is boosted at the probe and picks up less noise along the cable. EC and TDS are read amperometrically across two stainless steel pins. A temperature sensor sits in the same body, which is what compensates both the pH and the conductivity readings. The range is pH 0 to 13, compensated from 0 to 50 °C. What the HI1285-6 Probe Fits and How It Plugs In The body is polypropylene and the pH tip is a spherical 8 mm bulb. Fins around it take the knock when the probe lands on a bench. Inside is gel electrolyte against a single Ag/AgCl reference, so there is nothing to refill. It plugs in through a Quick Connect DIN fitting with CAL Check, on a seven-pole cable 1 m long. Maximum pressure is 0.1 bar. Before you replace anything, try the junction. The cloth junction pulls out to expose a fresh surface, and drifty or erratic readings often come back from that alone. One thing to check on the part number. The HI1285-7 is the GroLine HI9814 probe and is not the same fitting, so match the number to the meter you actually own. Key Features Pre-amplified pH electrode: The signal is boosted at the probe, so cable noise has less to work with. Three readings, one body: pH, EC and TDS, with a temperature sensor compensating both. Amperometric EC and TDS: Two stainless steel pins rather than a separate conductivity cell. Quick Connect DIN with CAL Check: One plug, and the meter can flag a probe that is out of condition. Extractable cloth junction: Pull it to expose fresh surface when readings go drifty or erratic. Gel electrolyte: Single Ag/AgCl reference with nothing to refill or top up. Protective fins on the bulb: The spherical 8 mm glass tip survives the knocks a bench gives it. Polypropylene body: Chemically resistant, for tanks running mineral feed day after day. Match the number to the meter: HI1285-6 is the HI9813-6 series probe. HI1285-7 belongs to the HI9814. Technical Specifications Specification Value Brand Hanna Instruments Part Number HI1285-6 SKU 716816 Type Multiparameter replacement probe Fits GroChek HI9813-6 series portable meters Measures pH, EC, TDS and temperature pH Range 0 to 13 Temperature Compensation 0 to 50 °C, 32 to 122 °F pH Electrode Pre-amplified, spherical 8 mm glass tip with protective fins EC and TDS Sensor Amperometric, two stainless steel pins Reference Single Ag/AgCl with gel electrolyte Junction Cloth, extractable to expose a fresh surface Body Material Polypropylene Cable 7-pole, 1 m, 3.3 ft Connector Quick Connect DIN with CAL Check Maximum Pressure 0.1 bar Not Interchangeable With HI1285-7, which is the GroLine HI9814 probe Meter Included No. This is the probe only