Sixth Graders Invent Smart Milk Pitcher
A group of sixth graders in a Manhattan public school has created a "smart pitcher" that alerts consumers when milk has gone bad. Who needs adults when these kids are taking care of business? Inhabitat has the story:
Normal milk has a pH that sits in between 6.5 and 7.2, but once harmful bacteria are introduced, they change the pH, increasing its acidity from the waste they produce. When the jug detects that the milk has reached a certain level of acidity, a light flashes near the top of the handle. The jug also features a color-coded thermometer and a well-insulated body. Future modifications to the prototype include adding an audible alarm and a sensor that only activates the warning lights when the container is outside the refrigerator.
“Making a pitcher that tells you if milk is bad or good would seem like the stuff of the future, but it can be made,” says Harry Freedman, one of the kids behind the smart pitcher.