Environmental Express Oakton CERTIFIED CRM pH Buffer, Clear, pH 4; 500 mL

Environmental Express Oakton CERTIFIED CRM pH Buffer, Clear, pH 4; 500 mL

The Oakton CERTIFIED CRM pH Buffer is a Certified Reference Material (CRM) designed for compliance-controlled laboratories and facilities requiring documented, traceable calibration standards. Manufactured and verified to rigorous quality requirements, this pH 4 buffer provides reliable calibration performance for pH meters while supporting regulatory compliance and quality assurance programs.

Key Features

• Certified Reference Material (CRM) designed for compliance-driven laboratory environments.
• Provides standardized reference calibration for accurate pH meter verification and calibration.
• Supplied with a calibration report from an ISO 17034 and ISO 17025 accredited laboratory.
• Clearly labeled for easy identification and efficient laboratory workflow.
• 500 mL (16 fl oz) bottle supports routine calibration and testing applications.
• Buffer value of pH 4.005 for accurate acidic-range pH meter calibration.

More About This Item

Certified Reference Materials (CRMs) help laboratories meet federal, state, and local regulatory requirements by providing traceable and standardized calibration references for pH measurement systems. These buffers are produced in compliance with ISO/IEC 17025:2017, ISO 17034:2016, ISO Guide 31, and ISO 33405 standards to ensure exceptional accuracy, documentation, and reliability.

Each CRM undergoes extensive stability, transportation, repeatability, and uncertainty testing before certification. Calibration reports are issued by an ISO 17034 and ISO 17025 accredited laboratory, providing documented traceability for audit and compliance purposes. Environmental Express Oakton continuously monitors product stability throughout its service life and communicates any significant changes to users.

The unopened buffer has a shelf life of up to 2 years from the date of manufacture. Once opened, the solution should be used within 60 days for optimal performance. Store away from direct sunlight to maintain buffer integrity.

Specifications

• Catalog Number: 00651-00
• Product Type: CERTIFIED CRM pH Buffer
• Buffer Value: pH 4.005
• Color: Clear
• Volume: 500 mL (16 fl oz)
• Compliance: ISO/IEC 17025:2017, ISO 17034:2016, ISO Guide 31, ISO 33405
• Description: Environmental Express Oakton CERTIFIED CRM pH Buffer, Clear, pH 4; 500 mL
• Shelf Life: 2 years unopened; 60 days after opening