The main problem with microscope cover slides is the tipe of glass. This
slides are made of borosilicate glass which have a volume resistivity of
10E15 Ohm cm at room temperature, compared with the one of soda lime
glass 10E13 Ohm cm. This high volume resistivity makes de use of
borosilicate glass impossible in our aplication.

The main question from my point of view; is, why I don't find soda lime
glass with thickness inferior to 0.4 mm. These thickness is a mechanical
limit? Or for some other reasons the manufacturers prefere  to make thin
glass with borosilicate  instead of soda lime?

Luis

shay kaplan wrote:

>If you can use small pieces - i.e. 60X25mm you can try microscope cover
>slides. They come in 150 and above thicknesses