very old test kit

[ChrisfromBrick]

this test kit is very old. Has nitrate, nitrite, ammonia, Ca, Alk, pH and phosphate.

Does this have a shelf life?

Are these any good?? It’s made by Hagen.

Should I replace my kits with something better?

 

[Johnd651]

It depends on a lot of things. A lot of times the titrants start to evaporate and concentrate the solutions. If everything was sealed, and there's no buildup, probably still ok.

 

[Randy Holmes-Farley Verified Community Expert]

All kits have a time limitation to accuracy, but I don’t know what it is for any kit, even those with dates on them.

 

[MnFish1]

I would buy a new one - unless there is an expiration date on the box/etc

 

[ChrisfromBrick]

i’ll just get the hanna kit but dang the sale ended yesterday.