Plastic Small lab tube

Purchased to organize doses of my most used homeopathic remedies. Color coding works well for my children who can quickly grab the headache or stomach ache remedies based on color and I don’t have to worry about them spilling product in dosage.

I work in a bio lab with several different species of bacteria so this color coded storage system is very convenient. The tubes are a bit smaller than your standard 2ml cryovial but they fit in most tube racks. the tubes also have o rings. My main complaint is that the box doesn't fit in a standard -80C freezer rack. This is a huge bummer since my -80C has no open space outside of the racks. And I've never seen wider racks that would fit this box. I would gladly trade one of the rows of tubes for a box that fits on a freezer rack. But I've noticed this issue with several other plastic freezer boxes in my lab.Overall it's a good rack and it's nice to have different colors to help stay organized. Unfortunately it won't fit in a freezer rack so that limits it's utility.

Great small vials for small quantities of diamond painting drills, already sort of color coded. Didn't need the pipettes but may find a use for them. Shipping was immediate and the package arrived next day.

Measurements: 1.5g empty, 4.4g full of water. Which means it can hold 2.9ml.The container lid only fits on one way, with the feature of one beveled corner, so the grid always aligns the same.I had planned to use these vials outside their storage compartment as travel bottles, to carry very small amounts of various liquids, but after trying out a couple full bottles, I don't know how much I can trust them on their own.About the maybe insecure caps: To be fair, in my short tests, I couldn't get it to leak any water, and I couldn't get the cap off by prying and squeezing moderately. There's a small rubber ring in each cap, and while the lid can wobble, the ring keeps it sealed OK. But, there's so much play in the threads, I can lean the cap a few degrees left or right, which doesn't inspire confidence in the products durability long term.

These tubes are well price and come with a handy rack and also dropper pipettes - the only issue I have is I wish they were sterile - there is no info so I assume they are not but TBH cryovials really do need to be sterile. I can autoclave them I guess but they def would be more helpful if they can pre-sterilized.