On Tue, 17 Oct 2017 11:23:17 -0400
JBI wrote:

i always thought they vacuum sealed those kind of displays


I'm not sure how or even if this should be done since the butterflies
inside are already fragile to begin with. My solution turned out to
be using hermetically sealed acrylic canisters. No out gassing
issues or gluing, so the environment inside can easily be changed,
updated, or repaired at any future time.

always thought that removing all the air using vacuum was a harmless
process


thought that if there is air still inside that would degrade the
specimen

so keeping air from getting in is good but also have to remove all
the air inside