Hanna Instruments HI-1285-51 pH/EC/TDS/temp Electrode for greenhouses, hydroponics, environmental monitoring, water treatment, boilers
Recommended for use with the HI-9811-51, HI-9812-51 & HI-9813-51 series of meters for testing in greenhouses, hydroponics, environmental monitoring, water treatment, and boilers.
HI-1285-51 pH/EC/TDS/temp Electrode for greenhouses, hydroponics, environmental monitoring, water treatment, boilers
About the HI-1285 series probes
The HI-9813-51 and HI-9813-61 are supplied with a polypropylene body pH/EC/TDS/temperature probe. The pH, EC, TDS and temperature sensor are housed in a single body that connects to the meter with a DIN connector.
Features
3 sensors in a single probe
Amplified pH electrode – The pH electrode has a built-in amplifier that will reduce the effects of electrical noise on the high impedance pH measurement. Examples of sources of electrical noise include motors, ballasts, and pumps which are common in greenhouses.
Amperometric EC/TDS sensor – The EC/TDS readings are performed by an amperometric sensor. An alternating voltage is applied to the sensor and the amount of current that passes between the two stainless steel pins is dependent upon the amount of salts (fertiliser) present. A greater amount of salt present results in an increase in conductance.
Polypropylene body - The body houses all the sensors in a single body design and is durable. The probe is gel filled for maintenance-free operation. It does not have to be refilled.
Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.