REAGECON pH 4.00 Buffer Solution ±0.01 at 25°C, 500 mL, NIST TRACEABLE Product Code: 1040525

Product Overview

The REAGECON pH 4.00 Buffer Solution ±0.01 at 25°C (500 mL) is a premium-quality calibration standard designed for the accurate calibration, verification, and quality control of pH meters and electrodes. Manufactured under stringent quality standards, this buffer is ISO 17025 tested, NIST traceable, and directly traceable to the IUPAC pH scale, ensuring precise, reliable, and internationally accepted pH measurements. The solution is formulated for excellent stability, even after opening, making it ideal for laboratory, industrial, research, pharmaceutical, environmental, food, and water testing applications.

Key Features

• Certified pH 4.00 ±0.01 at 25°C
• Volume: 500 mL
• Product Code: 1040525
• NIST Traceable Reference Standard
• Tested using ISO 17025 Accredited methods
• Manufactured under ISO quality standards
• Direct traceability to the IUPAC pH scale
• Excellent long-term stability after opening
• Colorless liquid
• Ready-to-use calibration solution
• Suitable for single-point and multi-point pH calibration
• Supplied with Certificate of Analysis (batch dependent)

Technical Specifications

Applications

• Calibration of laboratory pH meters
• Routine pH meter verification
• Water and wastewater analysis
• Pharmaceutical laboratories
• Food & beverage quality control
• Chemical manufacturing
• Educational laboratories
• Environmental monitoring
• Research laboratories
• Industrial quality assurance

Compatible Instruments

Suitable for calibration of pH meters from leading manufacturers, including:

• Hanna Instruments
• Thermo Scientific
• Eutech Instruments
• Mettler Toledo
• Horiba
• Hach
• Oakton
• Milwaukee
• Lutron
• Other laboratory pH meters supporting standard buffer calibration

Storage Instructions

• Store tightly closed.
• Keep at 15–25°C.
• Protect from direct sunlight.
• Avoid contamination by rinsing the electrode before immersion.
• Do not pour used buffer back into the original bottle.
• Keep container tightly sealed after use.

Package Contents

• 1 × REAGECON pH 4.00 Buffer Solution (500 mL)
• Certificate of Analysis/Test Certificate (where supplied)

Benefits

• Highly accurate calibration
• Excellent repeatability
• Stable formulation
• Internationally traceable standards
• Ideal for ISO, GLP, and GMP laboratories
• Improves measurement reliability
• Ready for immediate use