Hanna Instruments-76407/20F Dissolved Oxygen Probe with Protective Sleeve, 20m Cable
The Hanna Instruments-76407/20F is a Polarographic dissolved oxygen probe with internal temperature sensor and a 20m cable. The probe has a protective sleeve making it ideal for use in rugged or demanding environments.
Calibration is fast and simple, and measurements are temperature compensated. The sensitive PTFE (PolyTetraFluoro-Ethylene) membrane can be changed in a few seconds.
The Hanna Instruments-76407/20F is a standard polarographic dissolved oxygen probe for HANNA benchtop and portable dissolved oxygen meters. The probe is made of durable ABS plastic and contains an integrated temperature sensor for temperature compensated measurements. It is compatible with our Hanna Instruments-76407A/P PTFE membrane caps. Each membrane separates the probe’s platinum cathode and silver anode from the water sample being measured. Oxygen diffuses across the membrane and interacts with the polarographic system to produce a current proportional to oxygen concentration. Each cap is easily filled with Hanna Instruments-7041 electrolyte and screwed onto the probe.
Key features:
- Shielded, waterproof cable
- Cable protective sleeve
- PEI probe for best field protection
- Linearised and accurate thermistor temperature sensor protected behind a stainless steel cover
- Silver wire anode element
- Glass encapsulated platinum cathode
- Screw cap membrane that holds potassium chloride electrolyte solution (Hanna Instruments-7041S)
- Thin, permeable PTFE membrane isolates the sensor elements from the testing solution, but allows oxygen to enter (Hi-76407A/P)
- Hole for solution cycling
- Protective sleeve for field applications
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.