Hanna Instruments-4105 Carbon Dioxide Combination ISE Electrode
The Hanna Instruments-4105 is Carbon Dioxide, gas sensing combination electrode ideal for the detection of carbonates as CO2 in water, soft drinks and wine samples.
The Hanna Instruments-4105 is a gas sensing, combination ion selective electrode (ISE) for the determination of carbon dioxide (CO2) in solution. Its PTFE membrane allows for carbon dioxide gas diffusion into a thin layer of internal electrolyte. The internal sensing elements are within a durable Delrin® body.
The Hanna Instruments-4105 Carbon Dioxide Ion Selective Electrode is a complete potentiometric cell that contains both a silver/silver chloride (Ag/AgCl) reference and a pH measurement element. These elements are housed within a plastic body with a Chloride ion-containing electrolyte, isolated from the sample by a gas permeable membrane made of polytetrafluoroethylene (PTFE).
For the Hanna Instruments-4105 to measure carbon dioxide accurately, it is important that the pH of the calibration standards and sample be lowered with the carbon dioxide ionic strength adjuster (ISA) solution.
The carbon dioxide ISA ensures the pH of solutions is kept between pH 4.2 and 5.2. In this pH range, the carbonate and bicarbonate in solution are converted to carbon dioxide for an accurate measurement. The Hanna Instruments-4105 carbon dioxide gas sensing ISE can measure from 400µM (17.6 mg/L) to 0.02M (880 mg/L).
Key features:
- Replaceable PTFE Membranes - Gas sensing ISEs are combination electrodes that detect dissolved gases in a solution. The sensing element is separated from the sample solution by a gas permeable, PTFE membrane that is easy to replace.
- Durable Delrin® Body - The probe body is composed of durable Delrin plastic.
- BNC Connection - The Hanna Instruments-4105 has a universal BNC connector for easy connection to any benchtop meter with a female BNC probe input.
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.