Reference chemical standard with a neutral value, designed to ensure the accurate calibration of pH meters and reliable readings in different laboratory and industrial environments. It is mainly composed of phosphate-based buffer systems, which provide stability and accuracy within a tolerance range close to ±0.01–0.02 pH units. It is generally traceable to international standards such as NIST or PTB and is accompanied by a certificate of analysis that supports its quality.
Applications
Calibration of pH meters and electrodes.
Biochemical and enzymatic assays that require acidic conditions.
Chemical analysis and titrations at low pH.
Quality control in acidic foods, such as juices, vinegars, and fermented products.
Environmental testing in water and soils with acidic pH.
Industrial processes and chemical reactions that need to maintain a stable acidic pH.