Maintain accurate and dependable pH measurements with our pH 4 buffer solution, precisely formulated to provide a stable acidic reference point. This standardized buffer is ideal for calibrating pH meters, validating probe performance, and conducting acidic pH studies in chemistry, biology, food science, and environmental testing. Frequently used alongside neutral and alkaline buffers, the 30 mL bottle offers a convenient volume for routine calibration, instructional use, and controlled laboratory experiments.
Property
Details
Chemical formula
Buffer mixture (phthalate-based solution)
Formula weight
Not applicable (mixture)
CAS number
Mixture
Characteristics
Clear, colorless solution; stable acidic pH
Physical state
Liquid solution
Storage code
Green — general storage
Did You Know?
pH 4 buffer solutions are commonly used to calibrate pH meters for acidic conditions, particularly in food and beverage testing, fermentation studies, and environmental monitoring. Because many biological and industrial processes operate in mildly acidic ranges, accurate calibration at pH 4 is critical for reliable data. Using a pH 4 buffer alongside pH 7 and pH 10 standards ensures full-range pH accuracy and improved electrode performance.
