36PCS Cryo Tubes 5ml, Plastic Small vials with Screw caps Sample Tubes,PP Material ，with Silica Gel Gasket，Free from DNase, RNase, Human DNA

Tubes and box are as expected with the exception that the tubes really rock in the insert. Not a tight fit, literally could be a tube about 1.5x size and would still fit. Everying rocks around a lot. Just a PSA, doesn't affect use.

These things are perfect! Having the storage container to hold all them is so helpful. However they are built with quality and have no problem standing up individually. The lids give a nice tight fit with no leaks.

I bought these to test about 6 different water parameters a day. It was great to put them in a bucket when I was done and use new ones the next day, cleaning them all when I ran out. I needed to fill the vial to 5ml for the testing I was doing so these were perfect size for that. The tops twist on so there was no leakage and I think it was a good value for the amount you get.

They hold up in the Pressure Canner great!

I bought this to try many recipes of eliquids in a cheap and organized way. It works great, but the reasons I'm giving it 4 stars are:The case lid is a little inconvenient and comes off easily. I think a hinge with latch would be better.The vials have this cone shape pressed into the bottom. I would have preferred the bottom been flat.Labels/markings fade easily. Lid has a dimple from the mold. I thought about getting small circular stickers to put on top but didn't feel like waiting to start (so I used sharpie - pretty hard to do).Other than that great product and not too bad for the price!

I got this to share samples of my fountain pen ink with friends. The box keeps them all upright and tidy, the caps seal well, and they're easy to label. My only complaint is that the lid on the box doesn't latch on in any way, so I have to wrap a rubber band around it to keep it closed in my bag. Otherwise it's a great little set, and replacement vials fit in the box nicely.

Before buying I asked if these can be boiled for sanitization purposes and was unable to get a solid yes or no–– upon test boiling one and then a batch just now, I can safely say that YES, these are both able to be frozen AND boiled just fine. Excellent product, I use them constantly to hold live and dead insects for specimen collection. very easy to stuff one or two in a pocket and stay sealed perfectly well-- biggest gripe, which is not at all a fault of the product itself, is that it holds moisture so well that if improperly stored in a hot area the specimen inside goes bad from mold or fungus. will be buying again.

I sprouted seeds from my freezer with no problems. These Viles has a good seal.