Hanna Instruments pH 7 Buffer Solution

Neutral pH 7 calibration buffer for standardizing pH meters and electrodes.

• Most commonly used calibration buffer for laboratory and classroom pH testing
• NIST traceable for reliable and reproducible calibration
• Clear labeling with lot number and expiration date for quality control
• Airtight, tamper-proof seal preserves accuracy and prevents contamination
• Long shelf life ensures dependable use across multiple lab sessions

The pH 7 Buffer Solution (500 ml) is the most widely used calibration standard for pH meters and electrodes. As the neutral midpoint in the pH scale, this buffer is essential for verifying instrument performance and ensuring accurate readings across acidic and basic ranges.

Each bottle of buffer solution is traceable to NIST standards, providing confidence in the reliability of calibration results. Every bottle features a clearly printed lot number and expiration date for easy recordkeeping and quality assurance. Its airtight, tamper-proof seal protects the integrity of the solution and prevents contamination or evaporation during storage.

Designed for educational and professional laboratories, this neutral buffer is ideal for high school and college courses in chemistry, biology, and environmental science. It supports accurate instrument calibration in lessons that explore pH, water quality, and chemical equilibrium. When used alongside pH 4 and pH 10 buffers, it provides students with a complete calibration set for full-range pH analysis.