The reason that I ask this question is because I want to know if the reagent can still be used after 1 year if it is not opened and not exposed to air. In other words, can it be stored for a long time if not opened.
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Trouble is, you don’t know how old the reagent is when you get it. Mine has a sell by date on the box but not a use by date. Kind of annoying actually.
This is correct, it is 1 year from the sell by date on the outside of box.From the Neptune FAQ:
What is the reagent shelf-life?
1 year when sealed.
See: https://www.reef2reef.com/threads/trident-faq-official.595650/
When did you guys start bottling the new reagent that fixed the rising cal problem?This is correct, it is 1 year from the sell by date on the outside of box.
I just bought my 6 months reagents not too long ago and I can see my Calcium test results go up and down 0.10-0.30. I am not dosing calcium.When did you guys start bottling the new reagent that fixed the rising cal problem?
I couldn't agree moreI had a reagent that had an expiration date a month before I ended up using it. I think it was a batch of the original reagents, that had dates on the boxes. Anyways, I used it for half a month then my feed line got clogged and trident stopped testing. Since I was lazy and it was my last set of reagents, I just left it standing there for around 6-8 months maybe even longer after opening the bottles. I then decided to get my trident up and running again, and after cleaning I tried using the old reagent to see if it would work. Used my tank water to calibrate it against my hanna checker and salifrert. The trident didn't skip a beat, the testing was spot on, I was checking my trident against my hanna every few days or so. So from now on, I am going to use all of the reagents until they're bone dry rather than throwing away nearly 1/2 a bottle when the trident tells you to. I think these reagents don't expire as fast as Neptune would like you to think.