According to UK milk-merchant Cravendale, over 300,000 tonnes (364,000 tons)
of milk are tossed out every year because people cannot tell whether it is sour
or not. A new milk jug tests the white stuff for you and gives a readout on its
LCD display: fresh or sour.
The jug is simple. As milk sours, it becomes more acidic. A sensor in the bottom
of the jug detects the drop in pH and sounds the alarm. This gives people a
reliable measure of the milks freshness, and will supposedly stop so much milk
being poured down the sink every year. The blog post, from Cravendales site, is
thinly veiled publicity, but offers some interesting tidbits about milk. For
instance, Cravendales own brand is filtered as well as pasteurized for a truly
mind-boggling 21 days of (unopened) freshness.
Then again, milk is scary stuff anyway. If youre happy to drink the fatty white
liquid secreted by lactating mammals, then youll probably be happy to suck down
anything. Seriously, if God had meant us to drink milk, he wouldnt have
invented cheese. For those still stuck at the cows udder, though, this
resource-saving jug is just the thing.
To read the rest of this story please go to:
Wired
