[lm-announce] dust covers!

[Sam Swift]

Dear All,

Please remember that dust covers play a valuable role in protecting  
the microscopes from dirt.

1)   If you arrive at a microscope to find the dust cover has not  
been replaced, please let me know so that I can politely remind the  
previous user about the importance of replacing it after use.

2)  When you take the dust cover off, please put it on the nearest  
shelf rather than throwing it on the floor.

3)  When you replace the dust cover after your session, please make  
sure the lamps have been switched off and that the dust cover is not  
covering any hot parts of the microscope - the bulb will still be hot  
for some time after you switch it off, so make sure it's kept clear.

4)  If you leave the microscope on for another user, you can leave  
the dust sheet off as well.  The onus is on the last user to replace  
it.  Please do move the lens turret round to a blank position to  
protect the lens from gathering dust.

5)  Microscopes with chambers do not need to have dust covers put  
over them, but please bear in mind that if you are trying to do good  
DIC or brightfield, you may well need to dust the top of the chamber  
before you start.  This can be done with slightly damp blue roll or  
hand towels.  Be careful not to scratch the quartz plate beneath the  
lamp.


Many thanks,
Sam