Hanna Instruments HI-7041L Electrolyte Solution for Polarographic Sensors, 500ml
Electrolyte Solution for Polarographic Dissolved Oxygen probes in a 500ml bottle. The electrolyte solution is crucial to the performance of a Dissolved Oxygen electrode to keep the sensor active through regular maintenance.
Electrolyte solution
The HI-7041 electrolyte solution is suitable to maintain Polarographic Dissolved Oxygen probes and is ready to use in 500mL bottles. An oxygen probe is composed of a platinum electrode and a solid silver electrode. The HI-7041L is a concentrated Potassium Chloride solution held in place over the electrode by a PTFE (Polytetrafluoroethylene) membrane. With polarographic technology, an external voltage is applied to the platinum cathode, silver anode, electrolyte solution and gas-permeable membrane to establish a current that is proportional to the concentration of oxygen in a solution.
Ordering information
The following options are available below:
- HI-7041L - 500mL bottle
- HI-7041M - 230ml bottle
- HI-7041S - 30mL bottle
This products contains traces of Silver Chloride, so please consult the Safety Data Sheet for more information.
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.