Is there a shelf life with EZ-test.

[Space_Lover]

I've kept my kit in it's original tub on a bookshelf away from heat and out of direct light for the past 6 months. The first 10 test I did were all as expected and the pills were good. I was especially pleased with the Simons test which would always go a vibrant blue colour.

The last two tests I've performed (on different batches) have had either no change or very slight with Simons. Before I throw the offending pills away, is there any possiblity the Simons or Buffer are not working anymore?

 

[Jhon]

Well I've heard times like two years mentioned, and also times like six months.
I'd say it depends on how long ago you got the nice results. ie., I would expect to see a slow decline in the performance of the Simons reagent rather than it suddenly failing. If it's a good few months since you last got a nice blue colour then I'd say you need some more reagent. But if it's just a couple of weeks I'd say it's the pills' fault.

 

[Space_Lover]

It's been about 4 weeks since a good test so maybe I'll test some friends pills and see what I get before re-ordering.