4 ms·
Announcing the Agar-Pack! This a clear plastic bubble containing a sample of bacteria and a quantity of agar. Squeeze the bubble gently and the internal membr
by billpg 17y ago
Announcing the Agar-Pack!
This a clear plastic bubble containing a sample of bacteria and a quantity of agar.
Squeeze the bubble gently and the internal membrane separating the bacteria from the agar is broken, but the outer bubble remains intact. Now stick the bubble onto the packaging of any food product you've just opened. You now have a visual indication of the state of the food inside.
- jacquesm 17y agoclever! That is the kind of thing I had in mind, something low tech. The nice thing about your solution is that it automatically corrects for lower temperatures (or higher ones). Good thinking!
- ganley 17y agoThat won't work. The rate at which different foods spoil after they're opened varies dramatically. Foods with a lot of salt in them, for example, stay good for a long time, while my carrot juice spoils within days of opening it. Not to mention, until you break the seal, what are those bacteria using for food? I just write the date on things with a sharpie when I open them. A technological solution here seems to me to be more likely to complicate than simplify.