Perhaps a little appreciated point is that glassine envelopes are archival quality (i.e., low acid). I use them to keep older mineral specimen labels with the catalog card, and I tape the little envelope on the back of the filled-out card. Guess what? After some years the scotch tape deteriorates and basically comes unstuck from the (non-archival) card but is still perfectly fine where it is stuck on the glassine. So the lesson I would take away from that observation is that for bigger seeds it likely doesn't matter, but for orchid seeds and pollen, glassine should be far more benign.
I can send a photo of this phenomenon if anyone is skeptical. The difference is really dramatic.
Bob
On Monday, September 20, 2021, 04:14:12 PM EDT, Steve Marak via pbs <pbs@lists.pacificbulbsociety.net> wrote:
Glassines vs. kraft paper envelopes. I use a lot of both and keep both
on hand, but prefer glassines, especially for small seed and definitely
for things like orchid seed or pollinia, where kraft paper seems
actually inimical (except maybe for storing an entire pod for a few
days). The glassines are lighter, thinner, and so easier to store
especially for things like the orchid seed/pollinia, which need to be
stored refrigerated.
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