The imported PVC membrane ammonium ion-selective electrode (ISE) is a precision sensor that measures NH4+ ion concentration in solutions. This membrane electrode generates electrical potential through ion exchange or diffusion processes, enabling accurate quantitative analysis of ammonium ion activity relative to concentration levels.

• Reagent-free operation eliminates chemical waste and reduces environmental impact
• Fast response time with stable signal output using redox potential measurement
• Durable PP (polypropylene) housing material for long service life
• High-quality sensor-specific cables ensure signal accuracy and stability
• Cost-effective and eco-friendly analytical solution

• Remove protective cap from electrode tip - avoid touching sensitive membrane
• Shake electrode downward to remove internal air bubbles
• Activate new or long-unused electrodes by soaking in 1 ppm standard solution for minimum 24 hours
• After activation, rinse with deionized water and gently blot dry
• Before testing, immerse electrode tip in deionized water for 5 minutes with stirring

• Connect electrode to meter and set to mV mode
• Pour 100 mL deionized water into 150 mL beaker and stir thoroughly
• Blot electrode dry and immerse in prepared deionized water
• Add 1 mL of 1000 ppm standard solution, stir, record stable reading (E₁)
• Add 10 mL of same standard solution, stir, record stable reading (E₂)
• Calculate slope at 25°C as E₂ - E₁ and compare with specifications

• If slope deviates from specified range, prepare freshly diluted standard solution
• Soak electrode in diluted solution for 10 minutes before testing
• Repeat calibration steps - if issue persists, contact technical support

• Short-term: Preserve in deionized water or 1 ppm standard solution
• Long-term: Rinse with deionized water, wipe membrane dry, store in original packaging
• Reactivation required after long-term storage: soak in 1 mg/L standard solution for over 2 hours