[Demelerlab] Cell housing defects

[Borries Demeler]

Hi Nick,
We have a recurring issue with the glue used to keep the key guide inside
cell housings in place. The glue seems to degrade/deteriorate over time,
causing the key guides to fall out or pop up (see red circle), and when
they stick out, they prevent the user from inserting window holders or
centerpieces, since the end of the guide pin is blocking it -see pictures
below:
[image: image.png]    Pin is still in the key guide slot, but sticking out
where the glue has broken down, blocking insertion of other cell components
(window holders, centerpieces).

[image: image.png]   Here the key guide has fallen out completely, cell
components can be inserted, but the alignment is not assured, which is
critical for the centerpieces of course.

In the past I simply gave these housings to Richard Kanady (San Antonio)
who would swap them out for me. I understand he took them back to their
manufacturing and they would simply glue the keys back in. I got about 10
of them right now in this state that are currently useless. It would be
great if you could swap them out or fix them, we badly need them for
multi-sample experiments. I already asked my service engineer (Amit Singh),
but apparently there is nothing he can do about this without the serial
numbers on the housings, which are curiously all the same:

[image: image.png]

(305552)

Thanks so much, -Borries
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