Closed-door coded flow codes are used by the manufacturer to support inventory tracking and procedures vary by company. It is also possible that the company will use all the numbers for the date. These can be written in months, dates and years (011019 would be read on January 10, 2019) or can be recorded with the year before the month and date (190110 would mean January 10, 2019). An open dating expiration code reads exactly as it is written. A date flow code is written and read as the calendar date. For example, if a gallon of milk has a late date of 30.12.19, you should read it on December 30, 2019. Many open dating expiration codes have a choice of words before the indicated date. Some of the most frequently used expressions are: In some closed coded expiration data, letters are used to denote months. For example, A January, B February, C March, etc. After the letter, the numbers are usually used to indicate the date and year.
If the code is D0519, the date is April 5, 2019. . . .