Page 49 - The Wellington photographic handbook

WASHING.
When fixing is complete the films should be transferred to
the washing water. If the film has not been cut up the two ends
should be clipped to opposite sides of a large dish, and the water
allowed to flow gently in at one corner, tilting the dish slightly
towards the opposite corner so as to ensure a steady current of
water throughout the whole length of the film. Films which
have been cut up may be washed by transferring them to a dish
of clean water, constantly changing the water, draining the films
and rinsing the dish between each change. If this is done a dozen
times, allowing about half an hour for the operation, the films
will be thoroughly washed, provided they have not been allowed
to lie on top of one another. If this has been the case, the washing
will take much longer, and at least one hour should be allowed.
There are various other effective methods of washing films. They
may have the centre of one edge inserted in a cork and so be floated
vertically in a large vessel of water an ordinary bath answers
;
very well, but they should receive two or three rinsings before
being washed in this way, to get rid of the greater part of the
hypo. Another plan is to pin the film, after one or two rinses,
face outwards on a board, curving the film slightly so that the
water may get to the back as well as to the front.
The board is
floated face downwards on the surface of a large vessel of water
such as a bath. The water should be changed three or four times.
When the washing is finished the films must be pinned up
by one corner to dry. No alum bath or glycerine bath is necessary.
The films will dry quite flat of themselves. As WELLINGTON
Film is NON-CURLING, both sides are coated, and therefore
neither side must be in contact with anything during the process
of drying. The simplest way is to pin them up to the edge of a
shelf, putting the pin firmly into the shelf and sliding the film out
to its head.
GENERAL HINTS.
WELLINGTON Film is richly coated and has great
latitude. For this reason over-exposure is much less likely to be
harmful than under-exposure.
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