BUFFER PH 4.0 CLEAR

General description

This certified reference material (CRM) is produced in accordance with ISO 17034 and characterized in accordance with ISO/IEC 17025. This CRM is traceable to SI and higher-order standards from NIST through a continuous chain of comparisons. It is prepared using qualified and calibrated balances that comply with ISO 17025 requirements.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.

Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Application

The pH 4.0 Clear buffer reference standard is suitable for:

• Calibration of pH meters and electrodes
• Quality control of pH measurements
• Analytical method development and validation

Features and Benefits

• Solution that is stable, ready to use, and have long minimumshelf life
• Available in asealed bottle with convenient packaging to protect against contamination
• Accompanied witha certificate of analysis (CoA) for an effective audit
• Achieve precisepH control with this solution, ensuring accuracy in experiments
• Reliable andreproducible results for consistent outcome

Packaging

500 ml in Plastic bottle

grade: certified reference material. Quality Level: 300. CofA: current certificate can be downloaded. packaging: pkg of 500 . mL. application(s): environmental
food and beverages
general analytical
industrial qc. format: mixture. storage temp.: 15-25°C. Storage Class Code: 12 - Non Combustible Liquids. WGK: nwg. Flash Point(F): Not applicable. Flash Point(C): Not applicable.