50ml Plastic Centrifuge Tubes with Screw Cap, CBTONE 50 Pack Self-Standing Plastic 50ml Test Tube Polypropylene Conical Tubes with Cap, Graduated Marks

Perfect for wastewater sampling ! No leak, stay up, fit on rack. 10/10

Fueron lo que pidió mi hermano y todo bien para viales de citología

Outstanding little bottle. We use them for small machine screws and things like that. They hold up well.

I am using these in a rather strange way. So I have a bunch of disposable ice gel packs that came with my medication. I didn't want to throw them away and reusing them wasn't idea since they ripped so easily. I wanted to reuse them. I wanted something small and durable that wouldn't break as easily to fill with ice gel. I tested out 20 vials and put them in my cooler and so far so good. Unlike typical ice gel packs, these are small and fill up crevices of my cooler pretty well.

Great cost effective way to store coffee beans. I have used the for a few months now without any negative issues. Stores between 15-18g of beans depending on the bean. I have airtight canister and fill it with pre measured doses so I can just grind and make without lots of measuring.