Hanna HI5091 pH 9.18 25°C Technical 500 mL

Hanna HI5091 pH 9.18 25°C Technical 500 mL

The Hanna HI5091 pH 9.18 25°C Technical 500 mLis a high-precision technical buffer solution with a certified pH value of 9.18 at 25°C, specifically developed for calibrating pH meters in alkaline environments. This solution is NIST-traceable and comes with a Certificate of Analysis, making it ideal for both laboratory and industrial settings where reliability is essential.

Thanks to its carefully formulated composition, HI5091 is widely used in water treatment, aquaculture, hydroponics, food safety, and medical research—anywhere accurate alkaline pH readings are required.

Features

• Certified pH 9.18 Value @ 25°C
  Designed for accurate calibration in alkaline conditions, this buffer ensures reliable measurements in quality-sensitive applications.

• NIST Traceable Standard
  HI5091 is prepared in accordance with the National Institute of Standards and Technology (NIST) protocols, guaranteeing consistent and internationally recognized accuracy.

• Includes Certificate of Analysis
  Every bottle is labeled with a batch number, expiration date, and a temperature-to-pH correlation chart, which simplifies traceability and documentation.

• Tamper-Proof, Airtight Packaging
  The solution is sealed in a secure, airtight bottle to prevent CO₂ contamination, which could otherwise shift the pH value.

• Ready-to-Use Formula
  Since the solution is pre-mixed and stable, it can be used immediately without any dilution or preparation.

• Available in Multiple Sizes
  In addition to the 500 mL bottle, Hanna technical buffers are also available in 20 mL sachets, 1 Litre, and 1 Gallon (3.78 L) formats to accommodate various usage requirements.

Specifications

• Product Code: HI5091

• pH Value at 25°C: 9.18

• Volume: 500 mL

• Traceability: NIST Certified

• Packaging: Tamper-proof, airtight bottle

• Label Info: Batch number, expiry date, pH vs temperature chart

• Certificate of Analysis: Included

• Storage Conditions: 25°C, avoid direct sunlight

Applications

Given its alkaline pH, the HI5091 buffer solution is especially useful for:

• Water Purification Plants – For calibrating meters used in alkaline water systems.

• Food and Beverage Industry – Maintains accurate pH monitoring during production and compliance checks.

• Medical and Pharmaceutical Labs – Essential for testing samples in controlled alkaline environments.

• Hydroponics and Aquaculture – Ensures optimal pH balance in nutrient solutions and aquatic systems.

• Environmental Testing – Supports accurate field or lab calibration in alkaline soil and water samples.

Best Practices

To achieve the most accurate results:

• Always use fresh buffer solution for every calibration session.

• Clean electrodes with Hanna cleaning solution prior to use to remove any residual contaminants.

• Store the bottle tightly sealed at 25°C, protected from sunlight and heat.

• Do not return used buffer to the bottle to avoid contamination and pH drift.