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Results 1 to 6 of 6
  1. Default API test kit expiration dates

    0 Not allowed!
    Since I joined this forum I have seen alot people ask how long API test kits are good for so I thought I would post this.

    Comprehensive and speedy reply from Gary Jones corporate and scientific affairs manager for Mars Fishcare

    ''Your question is one that we always welcome. All test kits have a shelf life in which the chemicals degrade. No competitor can say that a test kit will read correctly forever.

    Mars Fishcare is the industry leader in testing without exception. Many of our solutions are used for both freshwater and saltwater testing while some are designed exclusively for freshwater. Many of our reagent bottles are used in various kits under API and PondCare brands. In some situations you will notice that two color charts are provided one for freshwater and one for saltwater while other kits have one color chart for both. The need for two color charts is based on chemistry. However you can read the lot number on any kit and determine the manufacturing date. The last four digits represent the month and year of production. So 26a1007 would be produced in October 2007.

    Our determined expiration dates are established under extreme conditions. The test kits expiration dates are first established under constant conditions of 40 degree Celsius with 75% humidity for an extended period of time. Our retention samples, which we have for five years of every batch of every product that we make, are also kept in a room with elevated temperatures. This ensures that if the test kits or water conditioners are kept under less extreme conditions that they may exceed our established expiration dating but we suggest following the recommended expiration dating listed below. Some retailers feel using worst case conditions are too conservative, we do not. Some retailers and distributors of our products continue to insist that expiration dates not be placed on the product for this reason. We continue to evaluate this and requests like yours helps us to guide our decisions in the future, for this I thank you.

    Test Solutions Expiration Date

    PondCare Wide Range pH Test Solution - 3 Years
    Ammonia Test Solution # 1 - 3 Years
    Ammonia Test Solution # 2 - 3 Years
    High Range pH Indicator Solution - 3 Years
    Nitrate Test Solution # 1 - 3 Years
    Nitrate Test Solution # 2 - 3 years
    GH Test Solution - 3 Years
    Calcium Test Solution #1 - 3 Years
    Calcium Test Solution #2 - 3 Years
    Phosphate Test Solution #1 - 3 Years
    Phosphate Test Solution #2 - 3 Years
    Copper Test Solution - 3 Years
    KH Test Solution - 4 Years
    Nitrite Test Solution - 4 Years
    Fresh Water pH Indicator Solution - 5 Years
    "Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction."
    Albert Einstein

    My 55g community tank
    API test kit expiration dates

  2. #2


    0 Not allowed!
    Thanks! That's handy. Maybe should be a sticky?

    ...and I should now go toss all my kits...they're at least 4 years old...
    55 g Goldfish Tank - 5 Fancies, 2 Dojos
    25 g Tropical Tank - Celestial Pearl Danio/Mixed

  3. #3


    0 Not allowed!
    This should absolutely be a sticky, Great post kk!
    Gas mileage isn't everything OIIIIIIIO
    Lack of planning on your part does not constitute an emergency on my part.
    Why pretend there are no stupid questions? Actually, There are many stupid questions: "Should I drink this bleach?" Is just one example.
    Having said that, Just because it's a stupid question doesn't mean that it shouldn't be asked. It's better to know.

    A warm beer is better than a cold beer. Because nothing is better than a cold beer, and a warm beer is better than nothing.

  4. #4


    0 Not allowed!
    Makes you wonder how many of these kits are sitting on distributors shelves and stock room shelves for a long time before we ever buy them. Also is questionable if when kept sealed and unopened, if they shouldn't last longer. I've never had a test kit that was useful altho many have been "out of date".

  5. #5


    0 Not allowed!
    Very useful INFO!....I always wondered about the expir dates on these tests...def just made me check my bottles THANKS A LOT!

  6. #6

    Join Date
    Oct 2010
    inland northwest, U.S.A.

    Awards Showcase

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    0 Not allowed!
    Thanks a million!

    Information like this makes this forum a valuable tool for us fishkeepers.

    I'm saving this in my "favorites" menu, and am also printing out the info to keep in my private aquarium folder.

    -- mermaidwannabe
    20 gal. high: planted; 8 white cloud minnows, 10 RCS, 2 blue shrimp, several snails; AC50, Azoo air. 65 gal: planted; 7 rosy barbs, 6 glofish,, 2 zebra danios, 6 rosy red (fathead) minnows, 3 dojo loaches, several snails; AC110 x 2.

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