Science U

Backwash Science Experiment

Season 2 Episode 1 | 1m 1s

Have you ever caught someone drinking straight out of the milk carton? Does saliva wash back into the milk carton from your mouth when you take a drink? ScienceU campers tested for the amount of bacteria in milk samples when they drank directly from the carton ("backwash") and when they used a glass (the "control").

Aired: 02/02/16

Rating: NR

Problems Playing Video? | Closed Captioning

Science U is a local public television program presented by WPSU.