In the book ABC-XYZ of Bee Culture on page 315 it refers to using sodium hydroxide for finding tracheal mites. Does any one know where I can buy this in small amounts for my personal use? Also on page 316 it refers to using a binocular microscope of 50 power as another method to view mites. Do I have to use a binocular microscope or can I use a monocular microscope? Any advice or suggestions would be appreciated as I am not a scientist and never took biology in school. Oh the value of hindsight. Garrett Martin Willets Lake Apiaries Nappanee, IN USA :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::