Dear Tamale,
We are mineral water concern in KSA. We are using following primary and secondary packaging & other materials,
1- corrugated cartons
2- Plastic closures
3- PS Cups
4- Aluminum foil for cups
5-Preforms for PET bottles
6- shrink films & stretch films
Along with these; there are paper labels, plastic sleeves for bottles, Glue, tape and all other materials used in any water manufacturing concern. I have to write the Work Instructions for sampling and testing of all of these materials but don't know that what should be the frequency of sampling for these materials? Are there any specific code of statistical sampling or different methods "ll be used?
Hope that now its clear.
Regards,
Ghulam Mustafa