OECD TG-122 Determination of pH, Acidity and Alkalinity
OECD GLP Physical-Mechanical Test
WESHIN INSPECTION TECH CO., LTD_

OECD TG 122: Determination of pH, Acidity, and Alkalinity

 

Precision measurement of aqueous acidity and alkalinity to ensure product safety and regulatory compliance.
 

The pH and acid-base characteristics of a chemical substance are fundamental indicators of its reactivity, corrosive potential, and environmental behavior. At Weshin Inspection Tech , we provide specialized testing in strict accordance with OECD Test Guideline 122 (TG 122), delivering accurate data on the acidity and alkalinity profiles of your substances.


The Importance of pH, Acidity, and Alkalinity Data

 

These parameters are essential components of chemical risk assessment and hazard communication:

  • Hazard Classification: Extreme pH values  are critical triggers for classifying substances as corrosive to skin or eyes under GHS.

  • Environmental Impact Analysis: Assessing the potential of a substance to alter the pH of aquatic environments, which is vital for ecological safety.

  • Stability & Compatibility: Predicting how a substance will interact with packaging materials, storage vessels, and other chemical formulations.

  • Regulatory Submissions: Fulfilling mandatory physico-chemical data requirements for REACH, agrochemicals, and industrial chemical inventories.
     

Our Testing Services

 

Weshin Inspection Tech utilizes standardized analytical techniques as outlined in TG 122:

  • pH Measurement: High-precision determination of the pH of neat liquids or 1% aqueous dilutions/suspensions using temperature-compensated pH meters.

  • Acidity/Alkalinity Titration: Detailed quantification of the acid or base reserve of a substance through standardized titration methods, reported in milliequivalents per liter or gram.
     

Why Partner with Weshin Inspection Tech?

 

  • Exceptional Accuracy: We employ multi-point calibration with certified buffer standards to ensure the highest reliability across the entire pH scale.

  • Rigorous Environmental Control: All measurements are performed under stable, temperature-controlled conditions (typically at 20°C) to eliminate thermal fluctuations.

  • Compliance-Driven Documentation: Our test reports are structured for direct regulatory audit, featuring clear methodology, dilution ratios, and comprehensive data summaries.


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