Bread-Bakers v112.n032.3

I've worked in several bakeries and starters there were always kept 
in plastic and worked fine. Anything else wouldn't be affordable. 
It's a different dynamic, though. The starter is used and fed 
continuously and doesn't sit as it might at home. I also keep my home 
starters in plastic containers. Some I bought at a restaurant supply 
place and others from the grocery store. I've never noticed problems.

Suzanne