

Hanna Instruments FC300B Sodium Ion Electrode
The FC300B is a glass combination Ion Selective Electrode (ISE) for the detection of sodium (Na+) ions in solution. Suitable for use with water, food products such as soup, dairy and brines.
FC300B Sodium Ion Electrode
The sodium electrode has a 1m cable and BNC connector.
The selective glass membrane produces a change due to the exchange of sodium ions on the surface of the membrane and the sample. The internal sensing elements are housed within a sturdy glass body.
The FC300B is ideal for a variety of applications in laboratories, food and beverage production, and water quality analysis.
BNC Connection – BNC is one of the most commonly used connector types in pH meters and electrodes. Compatible with any meter or electrode that uses BNC connectors.
Specifications
| Measurement Range | 1.0M to 1X 10-5M39100 to 0.039 ppm |
| Optimum pH Range | 9.75 to 14 pH |
| Temperature Range | 0 to 80°C |
| Approximate Slope | +57 |
| Body O.D. | 12 mm |
| Insertion Length | 120 mm |
| Body Material | glass |
| Cable | 1m coaxial |
| Connector | BNC |
| Possible Applications | water, food products, soup, dairy, brines, laboratory |

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.