Do test kits expire? - The Planted Tank Forum
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post #1 of 4 (permalink) Old 01-05-2006, 06:20 AM Thread Starter
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Do test kits expire?

I had recently picked up the aquarium hobby again and was wondering if test kits can go bad. I have a couple of bottles of pretty much all the kits for most water parameters. However they were last used about 4 years ago. Do these chemical expire or lose accuracy after time? If so, how often should you replace them?
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post #2 of 4 (permalink) Old 01-05-2006, 12:12 PM
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Yes. It's time for new test kits. About once a year for new test kits. Some kits last longer but you also have to figure in the "shelf time".
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post #3 of 4 (permalink) Old 01-05-2006, 10:03 PM Thread Starter
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Tossed the old ones out and got the aquarium pharmaceuticals' master test kit at the LPS.
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post #4 of 4 (permalink) Old 01-11-2006, 12:55 AM
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Here's a good link to check the expiration dates on a few test kits. AP is one so double check your kit and return it if anything is expired.


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