pH Calibration Pouch, 20 ml, pH 4.01

Product Code: HI70004P

The Hanna Instruments HI70004P is a premium-quality pH 4.01 calibration buffer solution supplied in a sealed 20 mL sachet. Designed for accurate calibration of pH meters and electrodes, each single-use sachet provides a fresh, contamination-free standard, making it ideal for laboratory, field, environmental, aquaculture, food processing, and industrial applications. The buffer is NIST traceable, manufactured under strict quality standards, and provides an accuracy of ±0.01 pH at 25°C.

• Precision pH 4.01 calibration buffer for accurate meter calibration.
• Single-use 20 mL sachets eliminate contamination from repeated bottle use.
• Manufactured using high-purity salts and deionized water under controlled laboratory conditions.
• NIST traceable for reliable and repeatable calibration.
• Light-block foil packaging preserves buffer integrity and extends shelf life.
• Every sachet is marked with a lot number and expiration date for quality assurance.
• Temperature correction chart printed on each sachet for improved calibration accuracy.