Product Details
NPT3/4 Ion-Selective Electrode Fluoride Ion Sensor F- Sensor
>>Technical Parameter
Concentration Range: 1 M to 1×10⁻⁶ M (saturated to 0.02 ppm)
pH Range:
5 to 7 pH (for 1×10⁻⁶ M)
5 to 11 pH (when saturated)
Temperature Range: 0–60°C
Pressure Resistance: 0–0.3 MPa
Temperature Sensor Options: NTC10K / NTC2.2K / PT100 / PT1000
Housing Material: PP (Polypropylene)
Membrane Resistance: <50 MΩ
Connection Thread: NPT 3/4"
Cable Length: 10 m or custom
Cable Connector: Pin connector, BNC, or custom
>>Overview
The ion-selective electrode (ISE), also known as a membrane
electrode, is an electrode with a sensitive membrane that generates
a membrane potential based on ion exchange or diffusion. It
primarily consists of an ion-selective membrane, an internal
reference electrode (typically Ag/AgCl), and an internal reference
solution (composed of chloride and strong electrolyte solutions of
the target ion). The ISE measures the electrical potential of a
specific ion in a solution, which is determined relative to a
reference electrode with a constant potential. The potential
difference between the two electrodes depends on the activity of
the specific ion in the solution. This activity is related to the
ion’s concentration, enabling quantitative analysis.
>>Feature
- Reagent-free, pollution-free, cost-effective, and eco-friendly.
- Redox potential measurement method ensures fast response time and
stable signals.
- Electrode made of PP (polypropylene) material.
- High-quality sensor-specific cables enhance signal accuracy and
stability.
>>Pre-Measurement Preparation
- Remove the protective cap from the electrode tip. Note: Avoid touching the sensitive area with fingers.
- Shake the electrode downward (like a thermometer) to remove
internal air bubbles.
- For new or long-unused electrodes, perform activation by soaking in
1 ppm standard solution for at least 24 hours.
- After activation, rinse the electrode with deionized water and
gently blot dry with a non-woven cloth or clean tissue. Before
testing, immerse the electrode tip in deionized water for 5 minutes with stirring. Replace the water multiple times and repeat
rinsing to prevent measurement errors.
>>Calibration (Slope Determination)
Connect the electrode to the meter.
Pour 100 mL of deionized water into a 150 mL beaker and stir thoroughly. Set the meter to mV mode.
Blot the rinsed electrode dry and immerse it in the prepared
deionized water.
Add 1 mL of 1000 ppm standard solution to the beaker, stir thoroughly, and record the stable reading (E₁).
Add 10 mL of the same standard solution to the beaker, stir thoroughly, and record the stable reading (E₂).
The slope at 25°C is calculated as E₂ – E₁. Compare the result with the specifications to validate electrode
performance.
>>Troubleshooting
If the slope deviates from the specified range:
- Prepare freshly diluted standard solution (lowest concentration).
- Soak the electrode in the diluted solution for 10 minutes before testing.
- Repeat the calibration steps.
If the issue persists, contact the manufacturer’s technical support
or replace the electrode.
>>Storage
- Short-term storage: Preserve the electrode in deionized water or low-concentration
standard solution (1 ppm). No reactivation is required before
reuse.
- Long-term storage: Rinse the electrode with deionized water, gently wipe the
membrane with a non-woven cloth, dry thoroughly, and store in its
original packaging. Reactivate in 1 mg/L standard solution, deionized water, or low-concentration
solution for over 2 hours before reuse.
Company Profile
JUGE was established in 2015, specializing in the field of
environmental online monitoring. With environmental online
monitoring systems at its core, JUGE integrates R&D,
production, sales, and after-sales services. It is recognized as
both a National High-Tech Enterprise and a "Specialized, Refined,
Unique, and Innovative" Small and Medium-sized Enterprise, serving
as a comprehensive solution provider for gas and water
environmental protection online monitoring systems.
JUGE provides scientific electrochemical instruments and sensors
for water quality measuring and gas monitoring, such as pH,
conductivity, dissolved oxygen, turbidity, and CEMS System for gas
monitoring with our industry-leading technologies, quality control
system, and customer service.
We strive to empower individuals, organizations, and communities to
better understand and manage water quality by providing innovative
and user-friendly electrochemical instruments and sensors that meet
the needs of all users. Through our work, we aim to create a more
sustainable future for our planet where everyone has access to
accurate and reliable water quality testing technology, and where
the preservation and sustainability of our water resources is a top
priority.
It is believed that after such a long accumulation of years, our
professional ability in the water treatment and gas treatment
industry will also provide better technical support to our partner.
Our target is to serve our customers efficiently and creatively in
order to save their money and time. Any requirements from you will
be responded in 24 hours. We sincerely wish to cooperate with
friends all over the world.