Checking yeast stored in mason jar

[nwbrewing32]

So I made a starter but couldn't brew so I threw the flask in the fridge for a night, decanted and transferred to a sanitized mason jar. I have roughly 20% headspace. This was one week ago.

My question is this - is there any way other than smelling the yeast to check for infections or contamination?

 

[flars]

It can be difficult to smell an infection in yeast. Some yeast just stink to varying degrees. Visual signs are the best key to find an infection.

 

[IslandLizard]

If your sanitation was impeccable, as it should when handling yeast, it will be fine. I do the same quite often, and never had a problem. Next time, save some of the decanted starter beer in another sanitized jar to top off your mason jar(s) after pouring or dividing the slurry.

 

[budbo]

In a sealed Mason Jar it will last for months