I have worked in the lab and used parafilm for various professional purposes but only recently decided to buy it for home use. It's amazing. It has great stretch so the quantity you buy here will last forever. It's also an excellent sealant and I've used it many times in the field to seal something with liquid and it usually keeps the liquid from evaporating. Personally, I mostly use it for more dodgy or household repairs, but I think it would be great for sealing groceries or bottles when traveling. We recently used it to temporarily plug a very small and slow leak in a pipe under our sink until it was officially fixed and it worked amazingly! My fiancรฉ is a bit more apprehensive about using something originally intended for lab use with food, which I understand, but I think it might still work just fine. It would be like the best version of cling film.
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