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I use Bormioli Rocco glass bottles to store water and fruit juice.

The problem with the juice bottles is that pulp residues dries on the inside of the bottle. How can I clean the bottles?

I have tried CLR (calcium lime rust) remover which is basically a powerful acid and that does not work. Suggestions like "put rice in the bottle" and stuff like that are useless. I mean I have tried ACID ok and the stuff is not coming off. Maybe I need to try raw lye? My concern with using an alkaline chemical like lye (sodium hydroxide) is that it might dissolve the glass.

I have considered trying piranha solution, a powerful and dangerous mixture used by organic chemists to clean glassware, but it requires access to sulfuric acid and highly concentrated hydrogren peroxide which are difficult to get.

  • Note that what is needed to dissolve various substances can differ greatly. So the acids you've tried could work for some substances, and not at all for others. In other words, going to a stronger acid or lye, could be unnecessary, and you should possibly try a different group of detergents. – holroy Apr 13 '17 at 11:30
  • I usually put some baking soda, a little bit of water and shake it well. That's the best you can probably do but it's not the best method as nothing compares to hand cleaning with a sponge. I wouldn't use any acids or dangerous chemicals, why risk so much? It's not worth accidentally losing your eyesight or getting burn scars. – Marina Dunst Apr 13 '17 at 18:22
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A bottle brush and some baking soda works wonders.

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Soaking the bottle overnight will make the pulp soft enough to scrub out easily.

Just fill the bottle with water and leave it on the counter overnight, then clean it however you would normally. You can add a bit of dish soap to the water if it seems like the cleaning is going to be particularly stubborn, but the pulp should just wash out with little to no scrubbing at all.

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Put a tea spoon of liquid detergent in the bottle, add a cup or two of hot water, and shake it to mix the water and detergent well. Then fill it up to the top with hot water and let soak for one hour, or two. Passed this time scrub with a bottle brush using the same liquid that was inside the bottle, discard it and rinse.

The heat makes the mixture of soap and water stronger. Don't use hard chemicals, you are risking poisoning yourself.

If you want to use boiling water (I prefer), add it slowly to avoid breaking the bottle in case it be cold.

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I put some fine gravel in the bottle with a few ounces of soapy water. Then put the top on and shake the bottle for a few minutes --- the gravel scrapes away the accumulated guck. Rinse well and use.

  • The gravel can also cause chips and scratches that more dirt can lodge in (if it does not shatter the bottle outright), this may be dependant on the type of glass. – k-l Apr 13 '17 at 20:08
  • You are absolutely right --- I did this with a plastic bottle --- I wouldn't try it on glass as it might chip and scratch and even crack the glass. – Alan Apr 15 '17 at 1:02
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The problem with the juice bottles is that pulp residues dries on the inside of the bottle.

There's your problem: once the pulp dries, it becomes work to clean it.

The easiest solution would be to wash your bottle right after use, a bottle brush helps getting the particles out.

If for some reason you can't wash it immediately:
Assuming you stoppered / closed your bottle while there was juice in it, you can simply close it again after pouring the juice out and keep the pulp from caking on. Adding a splash of water (if possible) helps, too. Then once you are home, clean as usual.

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