Thread subject: Diptera.info :: Pinning flies and wasps and some curious questions.
Posted by Susan R Walter on 11-09-2007 14:06
Chris - Vapona (in its original, highly effective form) has been banned for several years now. What is now sold as Vapona is little more than a herbal remedy as far as I know, although I haven't checked it recently.
Jorge - some ziplock bags are fine, and others are not. As a general rule, the more plastisizer a plastic has ie the more flexible it is, the more likely it is to give off undesirable gases. However, the rule does not apply in the case of plastic bags and sleeves. Some good quality plastic bags are made from inert polyester. It is generally extremely difficult to find out from the manufacturers though. These days you also have the problem that some plastic bags are designed to self destruct within about 12 months (ie they are biodegradable, so as not to add to landfill rubbish). This feature is less likely in ziplock type bags I suspect, but still worth being aware of. I don't really know what to advise you regarding ziplock bags. I'll see if I can find out from a conservator friend and get back to you.
Two good art supply stores in London are The London Graphics Centre www.londongraphic...
and Atlantis Paper www.atlantisart.c...
. Conservation By Design (see above, who sell ArtSorb) also do some acid free paper. (ArtSorb is a type of silica gel, btw, but a particularly good one if used correctly.) You should try French online art supplies too - they should be a good source of excellent paper and card - search for Aquarelle papier sans acide.