What is the shelf life for liquid pH buffers?

Dokument-ID

Dokument-ID TE3070

Veröffentlichungsdatum

Veröffentlichungsdatum 20.12.2021
Frage
What is the shelf life for liquid pH buffers?
Zusammenfassung
Liquid pH buffer shelf life.
Antwort
Shelf life of any Hach product (in reference to the expiration date printed on the package) is of an unopened bottle stored in the conditions also indicated on the packaging.

Hach pH 4 buffer has a shelf life of four years from manufacture date of an unopened bottle.
Hach pH 7 buffer has a shelf life of two years from manufacture date of an unopened bottle.
Hach pH 10 buffer has a shelf life of one year from manufacture date of an unopened bottle.

Shelf life of a bottle once opened is impossible to determine due to environmental variations specific to the customer location and storage standard operating procedures. (Elevation/pressure for example.) Hach recommends that the date the bottle is opened is written on the bottle and that the pH 4 & 7 buffers be used within six months and the pH 10 buffer be used within three months of opening.

 

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