Menda bottles

Simon Moore <simon.moore [at] hants__gov__uk> writes

>I am having problems with Menda bottles--the sort that you push down
>on the lid and a small amount of solvent comes into the dish-like
>receptacle under the hinged cover.  After a few months they stop
>working. ...

I found that this problem is often caused by the upper of the two
small ball bearings becoming stuck to the aperture of the cylinder.
In our case this seemed to result from the illicit rinsing of
adhesive laden brushes in the dispenser! If the pump is
disassembled, the ball bearing can usually be freed with a cocktail
stick from below. After reassembly, flushing through with acetone a
few times will normally do the trick.

Chris Robinson
Conservation Unit
University of Lincoln


                                  ***
                  Conservation DistList Instance 17:12
                 Distributed: Wednesday, July 16, 2003
                       Message Id: cdl-17-12-003
                                  ***