Page 75 - Handbook on Food Fortification in Kenya
P. 75

SAMPLING PLANS

Sampling plan - flours             of the shift. Label it with the
The following is a procedure for   date, hours of shift, and batch
picking a sampling of flour for    numbers if applicable. Send the
testing of the mineral - Iron      shift composite sample to the
                                   laboratory. 
Take 500g samples of flour
every hour, and check using the    Select randomly two daily-
iron-spot test/I-Chroma test kit,  composite samples and send
that the micronutrient premix is   to an external reference
being delivered.                   laboratory for the quantitative
                                   determination of iron and
Prepare composite flour sample     vitamin A.
by mixing all the hourly samples

The frequency of this analysis will depend on factory
tonnage as follows:

       If production is less than 20 MT per day, take 2
       samples every 6 months.

       For production 20-50 MT, test 2 samples every 3
       months and

       For production above 50 MT, test 2 composite
       samples every month

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