>From: jim <jim@proscitech.com.au>
>Reply-To: "jim@proscitech.com.au" <jim@proscitech.com.au>
>To: "'Ian Montgomery'" <ian.montgomery@bio.gla.ac.uk>
>Cc: "histonet@pathology.swmed.edu" <histonet@pathology.swmed.edu>
>Subject: RE: oil immersion lens cleaning
>Date: Tue, 25 Jan 2000 11:02:09 +1000
>Organization: ProSciTech
>X-Mailer: Microsoft Internet E-mail/MAPI - 8.0.0.4211
>
>You have my sympathy for working with grots Ian (been there myself), but
we are
>talking about human nature, rather than the principle "do you have to
>frequently clean to have the objective live."

	Unfortunately, yes. The majority of the work done in Physiology/Biochem
labs now is on live tissues and cells. The combination of immersion oil and
physiological salt solutions is a nightmare. When the lens are cleaned
after use they last, but when left, even overnight, the life span
deteriorates. Honestly, I might sound harsh, but for Physiology/Biochem.
applications regular cleaning is essential.

>Your department may be full of inverted scopes, but I would be surprized
if one
>in a hundred scoped in this world was inverted.

	Everyday microscopes I would agree most would be upright but I
wonder what
the figures are in research labs between upright and inverts. Anyone from
the trade willing to enlighten us.
Ian.

>Cheers
>Jim Darley
>ProSciTech
>

Jim,