The Oakton Traceable pH Standard Buffer, pH 4 (500 mL) is a certified reference material ideal for precise pH meter calibration in laboratory, industrial, and regulatory environments. Each buffer solution is NIST-traceable and supplied with a calibration report from ISO 17025 and ISO 17034 accredited laboratories, ensuring compliance with the highest metrology standards. This clear, colorless solution offers ±0.010 pH accuracy at 25 °C and is ready to use out of the bottle.
Product Features
- NIST-traceable buffer standard with ISO 17025 and ISO 17034 accredited calibration report
- pH 4.00 clear solution for routine and critical calibration tasks
- Certified Reference Material (CRM) meets regulatory agency mandates
- Accuracy: ±0.010 pH at 25 °C
- Available in 500 mL (16 fl. oz.) clear bottle; other sizes available
- Also offered in color-coded or colorless variants for convenience
Benefits
- Ensures accurate, reliable calibration of all pH meters
- Compliant with ISO, FDA, cGMP, CAP, CLIA, and Joint Commission standards
- Ideal for QA/QC labs, educational institutions, pharmaceutical, and food testing labs
- Ready to use out of the box—no additional preparation or calibration needed
- Each batch tested and certified by accredited calibration labs for complete traceability
Why Choose Oakton Traceable Buffers?
Backed by Oakton and the Traceable® name, Oakton pH buffers are designed to meet the most rigorous accuracy and documentation requirements. With NIST-traceable certification and multi-standard accreditation, this pH 4.00 buffer provides dependable, audit-ready calibration performance, making it ideal for use in validated environments and regulated industries.
