50ml Centrifuge Tubes Self-Standing Sterile Plastic Graduated Test Tube with Screw Cap, Pack of 25

Great quality and super cheap. Use them to perfectly store ~20g of coffee beans so I can dump straight into a grinder each morning.

Not using as a centrifuge container. Just use a graduated marked vessel for various water testing and storage of odd lots of liquids. Was surprised to find that they didn’t leak at all when I stored light penetrating oil in one.

Solid for giving out ink samples

vienen en una bolsa común estéril pero al abrir se pierde está. Tendrás que usar todas el mismo dia

No son resistentes

Pekybio makes great stuff!I ordered several consumables from Pekybio, and I must say, these were excellent along with the others. However, it is worth noting that they do have a strong plastic smell, so if your experiment is sensitive to phthalates, you may want to consider a different material.That being said, these containers seal very tightly, stand easily on their own, and have accurate gradations on the side. Based on the quality of their serological pipettes, I have every reason to believe that these containers are genuinely sterile. They were even nicely packaged in a plastic bag to maintain their sterility.Overall, I am very impressed with these consumables. They are of great quality and come at a fair price. I would definitely give them five stars.

These look exactly as pictured. All came intact and nicely packaged. Screw caps are easy to use and secure. Each tube does stand upright on it's own.