Hello all,
A most interesting piece of equipment for mite detection is wrote about in
the September issue of the American Bee Journal under Apicultural Research.
"A Rapid Field and Laboratory Method to detect Varroa jacobsoni in the honey
Bee(Apis mellifera)" by Kamran Fakimzadeh
 The device was invented by the Dept. of Applied Zoology, University of
Helsinki-Finland.
In short the makers claim for detection of Varroa quote:
The qualitive detection efficiency(% detected in infested samples)is 100%for
the infestation level above three persent(n=93).
Even at one percent infestation level the efficiency is more than 85%.
comment: I am impressed! When compared to ether roll  which is 35% for
infestation levels of three percent the invention is a big improvement.
I found most interesting that the device was tested in the USA for the
detection of Acarapis Woodi,incooperation with the USDA,Iowa State
University and Dadant and sons inc.
quote: However the detection method for the internal mite is still under
investigation and is out of the scope of this article.
comment: A field test for tracheal mite is beyond the scope of even my
active imagination!
Please read the article and comment. In closing i will quote the last
paragraph:
I dedicate this Finnish invention to beekeepers  and apiary inspectors and
encourage mass production of the device and wil answer all communication if
more information is required.Farmcomp Ltd. in Espoo,Finland is a potential
producer of the device and able to produce a few handmade devices at high
costs or volume production if needed.
comment: Are there any bee-l people with information on the above device?
Sincerely,
Bob Harrison