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Dear Philip,

For IR spectrophotometers you can get high RI windows, e.g. CsI has RI
1.74, diamond - 2.4.  The windows are pretty small and these RI's are for
wavelength of 10 microns - in the IR range.  There are quite a few minerals
with RI in this range too, like corundum - Al2O3 - RI 1.76, a company that
sells total internal reflection microscopes should supply this sort of
thing.

cheers,
Rosemary

> Greetings and this is my first posting.
>
> Would anyone know of a coverslip glass manufacturer/supplier anywhere in
>the world,
>  who at a reasonable cost, can supply coverslips with a  refractive index
>of 1.78.
>
>
> I have searched worldwide without success.
>
> Any help would be most thankfully received.
>
> Yours
> Philip Price
> Australia


Rosemary White
Microscopy Centre
CSIRO Plant Industry, Canberra
phone  6246 5475 or 0402 835 973
email   [log in to unmask]