Disclaimer: Sample size 1. Laboratories definitely worry about cross contamination for reagent (or even worse, culture) containers. The vast majority of contai

Disclaimer: Sample size 1. Laboratories definitely worry about cross contamination for reagent (or even worse, culture) containers. The vast majority of containers used in Microbiology labs are disposable and incinerated after use. And they certainly dont drink or eat their contents, which was the point you were responding too.