degreasing
sumairp at operamail.com
sumairp at operamail.com
Fri Jan 11 20:16:13 EST 2002
On 11 Jan 2002 10:33:40 -0800, rworth at oda.state.or.us (Richard Worth)
wrote:
>Hey group,
>Speaking of green coloration, does anyone know what that blue-green
>staining is that you sometimes get on Pierids when you try to relax
>them? I've seen it in both those that were relaxed in glassine
>envelopes and those not. I originally thought it was something in
>the envelopes but maybe not. I never see it until relaxing begins.
>Is there a remedy?
>Cheers, Rich
It is probably due to high humidity at packing, which then condenses
into a small water droplet when stored, usually in a cooler location.
Spots can also appear when relaxing if the humidity level is too high,
because of temperature drop in the evening.
Cheers,
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