How well do these work in the freezer? Do you get ice crystals inside?
999403
Crystals depend on what is inside and how long you leave the item in the freezer. Though I don't recommend these containers for other reasons, they are as good as any for crystals.
999404
work fine in the freezer. they would get ice crystals if left frozen long enough. But any container that contains air will form ice crystals. To avoid (delay) ice formation, you need to vacuum seal the container.
745889
They have been safe in a freezer as longas you leave space at top. They work okay in micro wave but I use plastic wrap instead of lid because lids warp with heat. Have never tried to use in oven
2253046
Yes! I have placed them in the freezer many times, no cracks or wear signs!
1176840
I have been keeping them in the freezer all the time and have had no problems.
479031
Of course you have to put them in the freezer.... you put them in the freezer for at least 5 hours, then use them in your drink. They just don't "melt" like ice does.
461794
I have frozen in them with no problem. However, I wouldn't ever put them in the microwave to thaw them out. This is the allowances I use on anything, regardless of instructions. It's a common sense thing for me!
304609
Extremely strong glass. Very thick. I would think if you left room for some expansion of frozen liquid, they should be fine. I have not tried freezing anything in them. This is only my opinion based on how sturdy they are.
1763974
I have not done that yet. You may want to try it first. I do use these a lot, I just never froze them. Sorry I could not be more helpful.
2092451
They are so easy! There's a hole in the top where you fill with water. When it's frozen, you let set on the counter for 3-5 minutes and pull the 2 spheres apart and voila, a new ice ball. I have heard using very hot or boiling water with produce clear ice. I have never tried it though, a friend told me it works.
1177164
we used to store for days in the freezer with no problem. The only issue we have is that they are pretty fragile - one drop on the floor and they will be done. I have re-ordered though overall satisfied.
265681
i recommend the ice packs that you activate in your freezer. about 6 of them.
724777
I'm not sure about the freezer but i know that they work great in the fridge and have never had an issue with keeping them cold for long periods.hope that helps some.
985292
Deb, I did freeze them since I purchased 4 pkgs--it was fine I had no problem and they defrost quicklythey are delicious ---oh and I had them in the freezer for about 3-4 months
530055
Yes! They are packed in an insulated box with ice packs. So when you get them they are still cold and you just have to put them directly into the refrigerator.
1822879
I don't use them in my freezer but as long as you measure first they should work.
1341669
We use them in a large -20 deg F commercial freezer at an aquarium and they get treated pretty roughly. I have been using them in that setting for 10+years and have never seen one break or crack. We use them for many other purposed too and they are very durable.
1954860
yes! i freeze food in them and then put them in the sink with cool water running and it thaws nicely, and the water doesn't get inside.