OK. This has to do more with chemistry than words, but the words I quote below have bothered me now for one whole day and I need some help here, so, if you understand chemistry or related areas, I will be very appreciative for some explanation.
I read:
Using dry ice to displace oxygen from food storage containers is a very straightforward affair. To prevent leaching plastic chemicals from the container into your food over a long period of time I recommend lining the bucket with a food grade plastic, mylar or brown paper bag before filling the bucket with your product. Be sure to wipe any accumulated frost off of the ice and wrap it in a paper towel or something similar so you don't burn anything that comes into contact with it. Put the dry ice at the bottom and fill the container. Shake or vibrate it to get as much density in the packing as possible and to exclude as much air as you can. Put the lid on, but do not fully seal it. You want air to be able to escape.
Here's my confusion over the above linearity, which loses me just about every, single time. You're putting food into some kind of container, right? You're lining that container, say, with mylar, as suggested, right? That's to keep the plastic from leaching into the food. That makes sense. But why do you wipe the accumlated frost off the dry ice? What big deal difference would it make to have a little bit of carbon dioxide frost on the dry ice? You're going to wrap the dry ice in a paper towel anyway, so what's the deal about wiping it off?
I know this doesn't have to do with any particular word, so I hope you won't mind my bringing this up, but I am very puzzled over these directions above.
Thanks for any help here over this frosty query,
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