What is procedure for physically observation of Retained Finished Product Samples?

GOOD MANUFACTURING PRACTICE (cGMP)
1

Frequency of Observation of retain sample.
No. of sample to be reviewed.
Type of parameter to be observed.
rational behind the selection of no. of sample and frequency.

2

Possible answers given in red colour .
Frequency of Observation of retain sample.-[COLOR="#FF0000"][COLOR="#FF0000"]once in a year from the date of manufacturing until at least one year from the date of expiry.(Ex: 03 visual inspections will be there for 02 year shelf life product)[/color].[/color]
No. of sample to be reviewed.-[COLOR="#FF0000"]one blister or equivalent to 10 dosage units.[/color]
Type of parameter to be observed.-[COLOR="#FF0000"]Any Deterioration and the sample should pass the physical description according to specification.[/color]
rational behind the selection of no. of sample and frequency.-[COLOR="#FF0000"]Sample should be twice the sample required for one full retest. [/color]