API Liquid Test Kits (link)
Each reagent bottle has a Lot No. printed on the bottle. The last four digits are the month and year of manufacture.
Example: Lot No. 28A0102. This is a pH reagent manufactured in January 2002.
Pond Care Wide Range pH, Ammonia, High Range pH, Nitrate, Phosphate, Copper, Calcium, and GH all last for 3 years.
Nitrite and KH will last for 4 years.
Freshwater pH (low range) and Pond Care Salt Level will last for 5 years.
HBH Fish Food (link)
Each fish food container has a 6-digit Lot No. that is printed on the back and allows HBH to track every product they make. All their food is good for 3 years after the manufacture date.
Between March 2004 and 06/04/06, HBH coded its products by a 6-digit batch number.
Between 06/05/06 and 12/03/06, HBH coded its products by the date produced.
Beginning on 12/04/06, HBH implemented date lot numbers. All of their products, with a few exceptions, are now coded by the date three years after the day that product was made, or the expiration date.
For example, a can of HBH Shrimp Pellets marked with 082306 was manufactured on August 23, 2006 and expires on August 23, 2009. A can of HBH Baby Bites marked with 002583 was manufactured on August 31, 2005 and expires on August 31, 2008.
