20Pack Round Clear Frosted Plastic Bead Storage Containers Box Case with Screw Top Lids,Cylinder Stackable Bead Containers for Make Up,Eye,Pills,Gems,Beads,Jewelry,Small Items,2.6x1 Inches

They are not screw on lids

Great product great seller

Viene consegnato un prodotto completamente diverso, con dimensioni diverse, di qualità inferiore e, soprattutto, senza filettatura. La qualità è paragonabile a quella di una coppetta di gelato del supermercato. Per 1 euro al pezzo, tanto vale andare direttamente al supermercato, dove almeno la trovo piena di gelato.

These PP5 bead cups work well as reusable Petri dishes. You can use them for no pour agar, and they eliminate the need for parafilm. Sturdier than condiment cups, and less plastic waste. It's an economical and eco-friendly alternative. They are slightly more opaque than regular plastic Petri dishes, and I would suggest using food color in your agar for better contrast and clarity. Overall I am very pleased with them. UPDATE: The clarity is fine without any food coloring. They're airtight and have become one of my favorites.

Sehr praktischer Ersatz für Petrischalen. Etwas zu teuer da Versand aus USA.

I use them as reusable petri dishes and they are air tight, preventing contamination. I've got one from a few months ago that is still clean.

They are not so clear so it is hard to look through them. But they work Good in my autoclave!