Centrifuge Tubes 50mL, Conical Tubes Sterile 25 PCS, Polypropylene, Leak-Proof Screw Caps, Plastic Container with Graduated and Write Marks, Non-pyrogenic, DNase/RNase Free, Human DNA-Free

Been using mine for several years now, they are part of my foaling kit. They work really well, I have never had problems with them leaking. Will certainly buy more when I run out!

I needed long narrow containers to put rooting powder on my plant cuttings. This fits my needs very well.its of good quality plastic. It’s Good value for what I paid and functions very well for my needs.

Worked great for fecal tests at my dog sanctuary. I purchased along with a centrifuge and the product holds up well. The quality of the product is excellent and as described. The amount you get is a great value for the price. They are very easy to use and sealed wonderfully in the centrifuge.

Excellent product! Good materials. Reusable in our chem lab.

These tubes are perfect for my purpose. They are the perfect size and having the label on them makes it easy to keep track of what I have in them. Though I will be using them for the germinating of my venus flytraps. It's great that they come with the screw on lids. I definitely recommend this product for what ever your needs are from science projects to seed germinating.

Reenactor who found the powder measures for black powder way too expensive. These are easy to use, plenty big/small enough, and priced right.

Good quality

I use these to store yeast for making beer. In order to do that, they need to be sterilized. I put them in the pressure canner at 15lbs. After the yeast is added, they can be frozen. They hold up well, don't deform under hot or cold temperature, and the cap seems to tighten down hard. Out of the 5 or 6 batches of beer I have made, I haven't had one contamination. The little white paint area you can write on does flake off pretty easily. I'm not sure if it's because of the temperatures or the rubbing alcohol. It's not a big deal because I just add a piece of painters tape to them and write on that.

El pedido no llego, posteriormente el proveedor, se comunicó conmigo y mando el material sin costo por los problemas ocacionados.