Searching for *non-fluorescent* 3 µm beads

[Nidia Maldonado Carmona]

Hello!

I'm searching for non-fluorescent beads, of around 3 µm diameter. 

It doesn't matter if they are latex, polystyrene, silica, or other material as long as they're not fluorescent. 

I need them for an OD experiment, so I may need quite a bit of them, so if somebody has them or knows of somebody who has them, please send me a message

Thanks!

Nidia