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After having some weird readings on my tanks (thanks eklikewhoa) I contacted Aquarium Pharmaceuticals to see what the shelf life of their test kit chemicals are. Here is their response.
In response to your question, each reagent bottle has a Lot # printed on the bottle. The last four digits are the month and year of manufacture. Example: Lot # 28A0102. This is a pH reagent manufactured in January of 2002. Pond Care Wide Range pH, Ammonia, High Range pH, Nitrate, Phosphate, Copper, Calcium and GH all last for three years. Nitrite and KH will last for four years. Freshwater pH(low range) and Pond Care Salt Level will last for five years. I would not trust these kits after they have expired.
I hope this helps some of you. Just to let you know all my chemicals were dated around January 2002 and therefore are all expired. So all my reading are incorrect and I need to buy a new set of testing kits. Any recommendations or should I stick with AP?
In response to your question, each reagent bottle has a Lot # printed on the bottle. The last four digits are the month and year of manufacture. Example: Lot # 28A0102. This is a pH reagent manufactured in January of 2002. Pond Care Wide Range pH, Ammonia, High Range pH, Nitrate, Phosphate, Copper, Calcium and GH all last for three years. Nitrite and KH will last for four years. Freshwater pH(low range) and Pond Care Salt Level will last for five years. I would not trust these kits after they have expired.
I hope this helps some of you. Just to let you know all my chemicals were dated around January 2002 and therefore are all expired. So all my reading are incorrect and I need to buy a new set of testing kits. Any recommendations or should I stick with AP?
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