3

I use Fage yogurt as an example, but if possible, I'd like a general answer that can apply to products that are similarly packaged (ice cream tubs, detergent, etc.).

Assume the consumer consumes 1kg of yogurt a week. Assume the consumer tosses everything into the recycle bin. Does he do more harm (to the environment) buying his yogurt in the 1kg tubs or in the 200g containers?

  • 2
    You want to reduce the amount of stuff you throw away. Bigger containers usually have relatively less packaging, so that's better sustainability-wise. But with food containers the question is will you finish all contents before it spoils. – THelper Oct 4 '14 at 19:24
  • I make my own greek yogurt at home (it's very easy and delicious), and once it's ready: I use small glass yogurts pots to store it. You could do the same with a brand product, i.e. buy a large quantity and put them yourself in smaller reusable containers. – Max Oct 9 '14 at 0:15
4

Almost certainly the 200g containers.

Imagine a cube of yoghurt (ugh!). Think about the amount of material that will required to fully encompass that cube. That is the 1kg container. Now imagine that that cube is partitioned into five parts, and think about the amount of additional material required to accomplish this. That is 5x 200g containers.

The only caveat that I can think of, in terms of straightforward material use, is that the 1kg container may be thicker - but I'm sure that in the vast majority of cases it is the more economical option.

This does assume that all other factors are equal: that the full 1kg is eaten every week, that having a larger container doesn't lead to the consumer having larger portions, and so forth.

3

Simon W is overall correct.

While when the size gets large enough the walls have to be thicker because of the weight involved, for small products, the problem is that they have to be strong enough for the handling machinery.

However there is an easy way to test this:

Weigh them. Empty of course. For each container wash it and weigh it. Don't forget the plastic sealer under the lid. There are good kitchen scales now that are accurate to about 5 mg (1/200 of a gram) Weigh each and do the arithmetic.

Take into account too the variability in materials. Some materials, like tetrapaks are very hard to recycle. (Tetrapaks have a layer of aluminum foil, two layer of paper, and I think a layer of plastic.) The easiest container to recycle is a plastic polyethylene milk jug.

  • 'The easiest container to recycle is a plastic polyethylene milk jug.', that may be true from an energy point of view, but glass can be cleaned and reused instead of recycled, and plastics are usually downcycled. – THelper Oct 9 '14 at 7:40

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.