Sealing Tape for Petri Dishes?

[Allison]

WS wrote:
> Dear Experts,
> 
> just have bought sealing tape for petri dishes at 35 euros per 33m
> roll. After unpacking, I realized that someone must earn a fortune by
> buying some cheap stuff in bulk and removing the label on the
> cardboard roll to prevent finding the real source.
> 
> Any idea what I might try next time?
> 
> Thanks for your help!
> 
> Wo

Parafilm works well.  I use strips cut about about an inch wide.

Allison