OK, there seems to be some confusion about this store thing.
Before we used to have a small E-Z Test, it is not on the site anymore but it is still used to send out as a sample.
This one is in plastic, therefore it needs to bes tored in the fridge because over time, the reagent will slowly react with the plastic and go brownish eventually.
For optimum test results with the small one, let it warm up to room temperature before testing.
However, for several reasons we changed to the LARGE E-Z Test.
This one is in glass and therefore does not need to be stored in the fridge.
The reagent is unable to react with glass so it will last forever and you can test up to 200 samples when used carefully.
The liquid will stay clear.
;-)
Rgds
aj