yes if the tree sap stuff if can get fungus in it. had that happen to microscope lenses in the lab.... Ed# In a message dated 9/29/2017 2:11:26 P.M. US Mountain Standard Time, [email protected] writes:
On Fri, 29 Sep 2017, Ed via cctalk wrote: > what was the orig. bonding material between face glass and tube? just > curious.... fungus?
