Figure 6-1. Location of manufacturer's code.
(3) Other than numbers. The code is not always numbers. The code may
appear as letters, letters and numerals, raised (embossed) markings, or color-coded ties.
For example, bread uses color-coded ties. The codes may be placed in various locations
on the outer covering.
c. Types of Code Dating. The manufacturer may use open dating or closed
dating. The veterinary food inspection specialist must determine the type of code that is
(1) Closed dating. Closed dating information is used on various items, but
usually on canned items. The codes may appear as numbers or letters of symbols, or
even as colors. The inspector must know the coding system to determine the age of the
product. (See figures 6-2 and 6-3.)
(2) Open dating. Open dating information is clearly printed on the product so
that the consumer may read it. (See figure 6-4.) A normal, recognizable calendar date is
used. The information provided may be the pull date ("best when used by" date),
expiration date, or the date of pack (pack date). Open dating is for fresh products only.
Open dating is intended for chilled products, to ensure that the consumer receives fresh
products of assured quality.