Horiba Solutions NIST pH Buffer Solution Kit

Horiba Solutions NIST pH Buffer Solution Kit, 250 mL Each (pH 4.01 / 6.86 / 9.18 + KCl Reference) – 501-S

The Horiba 501-S NIST pH Buffer Solution Kit provides a complete set of calibration solutions for accurate and reliable pH meter calibration. Horiba formulates each solution to meet NIST-traceable standards, ensuring dependable performance when adjusting or verifying pH measurement systems in laboratory, industrial, or field settings.

This kit includes four 250 mL bottles of pH buffer solutions:

• pH 4.01 – suitable for calibration in the acidic range

• pH 6.86 – ideal for neutral point calibration

• pH 9.18 – for alkaline range calibration

• KCl Reference solution – used as a reference electrolyte for pH electrodes during calibration

Horiba designs these buffer solutions to support precise pH meter calibration by establishing known, stable pH points. Users can calibrate pH instruments quickly and consistently, helping ensure accurate pH measurements across varying sample conditions.

This kit suits laboratories, quality control departments, educational facilities, environmental monitoring teams, and any application that requires routine pH calibration with traceable standards.

Key Features

• NIST-traceable pH buffer solutions for quality calibration

• Includes four 250 mL bottles (pH 4.01, 6.86, 9.18, and KCl reference)

• Supports calibration in acidic, neutral, and alkaline ranges

• Provides stable, known pH reference points

• Helps ensure accurate, traceable pH measurements

• Ideal for laboratory, industrial, and field calibration

Technical Specifications

• Product type: pH buffer solution kit

• Kit contents:

  • 250 mL pH 4.01 buffer solution

  • 250 mL pH 6.86 buffer solution

  • 250 mL pH 9.18 buffer solution

  • 250 mL KCl reference solution

• Standard traceability: NIST-compliant

• Use: pH meter calibration and verification

• Packaging: Individual 250 mL bottles

Applications

• pH meter calibration in laboratories

• Routine quality control and instrument verification

• Environmental water analysis calibration

• Educational and training laboratories

• Industrial process calibration and monitoring