BUFFER Sol. pH 4.0

Buffer Solution pH 4.0 is a standard acidic buffer used mainly for pH meter calibration in molecular biology and other laboratory applications. It gives a stable reference value for checking and correcting the performance of pH measurement instruments.
A buffer solution resists change in pH upon the addition of small quantities of acid or alkali. This characteristic makes it useful as a standard calibration standard. Accuracy in pH measurement is necessary as this parameter could affect the chemical and biochemical reactions and the outcome of the laboratory procedures.
pH meters measure the electrical potential between electrodes that are in contact with a sample. The measured value is compared with a calibration established using solutions with known pH values. The use of a good quality pH 4.0 buffer provides a correct starting point during calibration.
The solution has a pH of 4.0 and is a colourless liquid. Appropriate calibration improves the accuracy and consistency of subsequent pH measurements.
Buffers should be handled and stored as per standard laboratory practices. Correct electrodes, calibration method and buffer handling are essential for accurate pH measurements.

Provides a reliable acidic reference standard for calibrating pH meters and maintaining accurate pH measurements in laboratory applications.