..... 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.
Ammonia, High Range pH, Nitrate, and GH all last for three years.
Nitrite and KH will last for four years.
Thanks Woody,
I have been complaining to Frank that my nitrates are reading way out of line. He told me to forget about it, b/c my clam was doing so well. I have been banging my head as to why my nitrates were reading at around 10-40 according to the api test. I figured there should be an expiration issue. It turns out my nitrate test bottle was made in 0104.
With that in mind, what is the best kit to buy to replace it? I have heard that the powdered kits are the best.
Thanks.
Darrell