Hanna pH4 Buffer/ water testing HI7004

Hanna pH4 Buffer HI7004 is a ready-to-use calibration buffer formulated for pH electrode calibration and water testing at the acidic calibration point (pH 4). The solution is manufactured to traceable standards and is supplied with a Certificate of Analysis, a lot number and expiration date, and a temperature chart of the actual pH value at various temperatures for use during electrode calibration procedures.

Key Features:

• Calibration point: pH 4 (HI7004)
• Accuracy: ±0.02 pH at 25°C
• Traceability: values traceable to NIST Standard Reference Materials with Certificate of Analysis supplied
• Manufacturing standards: prepared according to ISO 3696 / BS3978 using high-purity reagents
• Labeling and packaging: lot number and expiration date marked; tamper-proof seal and color-coded label; temperature compensation chart printed on bottle

Advantages:

• Provides a NIST-traceable reference and Certificate of Analysis for documented, auditable calibrations
• High accuracy (±0.02 pH at 25°C) supports reliable pH electrode calibration for water and laboratory testing
• Clear labeling (lot number, expiration date, temperature chart) and tamper-proof packaging support good laboratory practice and solution integrity
• Formulated and produced under controlled conditions to reduce contamination and ensure consistent buffer values