Hanna Solutions Calibration Solution 7 - 500 ML

Hanna Solutions Calibration Solution 7 is a pH 7.01 calibration solution for keeping pH meters and testers on target when you need dependable, repeatable readings. This pH calibration buffer is a simple reference standard that supports consistent pH numbers in routine water-quality checks.

Built for reliability, this pH 7.01 calibration solution is NIST traceable and supplied with a Certificate of Analysis, giving you added confidence in the value you’re calibrating to. Each bottle is marked with a lot number and an expiration date for straightforward quality control. The stated accuracy is ±0.01 pH at 25°C, which helps when you’re tracking trends and comparing readings over time.

Hanna produces this calibration buffer in accordance with ISO 3696/BS3978 standards using high purity salts and deionized water. The solution is prepared using certified weight-checked balances and Class A glassware, with production carried out in a temperature controlled environment monitored with certified thermometers. Those manufacturing controls are designed to keep the pH value stable and consistent from bottle to bottle, especially for users who calibrate frequently.

Everyday handling details are equally practical. The air tight bottle with tamper-proof seal is designed to protect freshness before first opening. A color coded label makes it easy to identify the buffer value at a glance, while the solution does not contain any dyes that may stain the reference cell of a pH electrode. For quick reference in variable conditions, a temperature chart of the actual pH value at various temperatures is printed on each bottle. Hanna’s calibration buffers are also formulated with an expiration of 5 years from the date of manufacture for an unopened bottle.

This calibration solution is a good fit for growers, greenhouse teams, and water-testing users who want a trusted pH 7.01 calibration buffer with NIST traceable documentation, clear lot tracking, and bottle features that support consistent meter performance.