MINIMUM NUMBER OF CASES COMPRISING A REPRESENTATIVE SAMPLE
Cases in
Cases in Lot:
sample
1 case * .............................................................................................
1
2 to 10, inclusive ............................................................................... .
2
11 to 25, inclusive ............................................................................. .
3
26 to 50, inclusive ............................................................................. .
4
51 to 100, inclusive ............................................................................ .
5
101 to 200, inclusive .......................................................................... .
8
201 to 300, inclusive .......................................................................... .
11
301 to 400, inclusive ..........................................................................
13
401 to 500, inclusive ..........................................................................
14
501 to 600, inclusive ** .....................................................................
16
* For lots which consist of less than 1 case, a minimum of 50 eggs must be
examined. If the lot consists of less than 50 eggs, all eggs must be examined.
** For each additional cases, or fraction thereof, in excess of 600 cases, one
additional case must be included in the sample.
Figure 2-5. Sample size Table, USDA regulation.
2-7.
SELECTING SAMPLE CASES/SHIPPING CONTAINERS
a. When selecting samples, select the number of cases/shipping containers
equal to the sample size.
b. When selecting samples, indicate which sample shipping containers are to be
used for taking internal temperature.
c. Before selecting cases for sampling, a predetermined pattern must be
established to ensure randomness of selection. The best way to ensure that the sample
cases drawn are representative of the entire shipment is to assign a number to each
case in a lot, then follow a procedure similar to the one described in Military Handbook
53 to choose the sample cases. The inspector should identify the samples by applying
special markings at the time of their selection to avoid the possibility of being presented
the wrong cases as a result of the time lag between selection of the sample cases and
their removal from the lot to the candling room. Each case should be numbered
consecutively, the case number circled, and the case initialed by the inspector. An
indelible wax pencil or crayon can be used for this. The DOD stamps must not be used
because, if the lot is provisionally rejected, the impressions would then have to be
removed or obliterated.
MD0713
2-8