||The warranty period is the period after manufacture in the unopened condition as shown below. Actually, it is all right to use the KF reagent after these periods.
The lot number shows the alphabets, A, B, C … or O, P, Q …, the month of manufacture, 1, 2, 3, etc., and the first 2 digits of the figure show the year of manufacture (last 2 digits of the year).
|Reagents for coulometric titration method||Anolyte/catholyte/electrolyte solutions||5 years|
|Titrant for volumetric titration method||Titers of 1 mg, 3 mg, 5 mg and 10 mg||2 years|
|Dehydrating solvent for volumetric titration method||Various||5 years|
|Water standard sample||Water standard solution of 10 mg||5 years|
|Water standard solutions of 1 mg, 0.2 mg and 0.1 mg||3 years|
|Solid water standard sample||5 years|
|Related articles||Standard water-methanol||3 years|
Example) D05123 means the manufacture in April 2005.