pH 4.01 Calibration Buffer Solution Red

pH 4.01 Calibration Buffer Solution, Red: A ready-to-use aqueous buffer for accurate calibration of pH meters and probes at acidic pH. Colour coded red for easy identification.

Manufactured in the UK: Our pH 4.01 Buffer Solution is manufactured and bottled using non-toxic, chemical-resistant bottles, providing reliable and trusted quality to our customers.

Frequent Uses

Primary Calibration of pH Meters

Used as a calibration point for pH electrodes, supporting single or multi-point routines around pH 4.01 to verify slope and offset.

Temperature Compensation Verification

Supports checks of automatic temperature compensation by confirming stable readings near 25°C and referencing known temperature–pH behaviour.

Rinsing Between Calibration Points

Used to rinse probes between buffer steps to minimise cross-contamination during multi-point calibration sequences.

Education and Training

Suitable for teaching labs and training sessions to demonstrate best practice in pH measurement and calibration.

HS Code / Commodity Code: 3822 9000

Hazard Phrases: H0001

Prec Phrases: P264,P281,P501