The manufacturer informs:

Calibration solution for electronic pH meters with Ph value 7.00.
The contained solution is ready for use: simply immerse the electrode in it and proceed to calibration.
Using it ensures accurate calibrations.
The packaging provides adequate protection of the solution from light and is very practical for use in field measurements.

Valore Ph (a 25°C) 10.00±0.02

Attention:

may cause irritation if in contact with eyes or skin; in case of contact rinse thoroughly with running water and contact a doctor.

Tenere lontano dalla portata dei bambini