Fluoride Standard (10 ppm) with TISAB II

This 10 ppm standard is an essential high-point for calibration curves, particularly in industrial applications where fluoride levels exceed typical drinking water concentrations.

Features:

• The TISAB II component includes CDTA, which effectively masks interfering polyvalent metal ions like Aluminum (Al³⁺) and Iron (Fe³⁺) that could otherwise bind fluoride and cause false-low readings (Chelating Power)
• Maintains a uniform ionic background, satisfying the requirements of the Nernst equation so the electrode responds specifically to fluoride activity
• Buffers the solution between pH 5.0 and 5.5. This prevents the formation of undetected hydrofluoric acid (HF) and eliminates hydroxide (OH^-) ion interference
• Pre-mixed formulation (Ready-to-Use (RTU)) reduces pipetting steps and the risk of cross-contamination, ensuring higher reproducibility in busy quality control settings

Safety & Regulatory Information:

WARNING! Chemical Hazard: This solution contains TISAB II (acetic acid and sodium chloride). It may cause mild skin, eye, and respiratory irritation if handled improperly.

• Personal Protection: Wear nitrile gloves, safety splash goggles, and a lab coat.
• Important Storage Note: Never store in glass containers. Fluoride ions are chemically aggressive toward silica; glass storage will etch the container and cause a significant drop in the standard's actual concentration.
• Handling: Store at room temperature in the original polyethylene container. Ensure the cap is tightly sealed to prevent evaporation, which would increase the concentration.