Page 112 - The Wellington photographic handbook

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P.O. P. is one of the older photographic processes. The great
advance which has been made during recent years in the
manufacture of development papers, such as the " WEL-
LINGTON " Bromide, S.C.P. and B.B., has deprived P.O. P. of the
unrivalled position it once held. There still remain, however, many
purposes for which it is unequalled. For richness of gradation
it is almost unsurpassable, and there is beyond doubt a real charm
in being able to watch the gradual appearance of the photographic
image under the action of light.
WELLINGTON P.O. P. is characterized by excellent
keeping properties and by a remarkable freedom from " double
tones." It is made in the following grades :
GLOSSY, MATT, CARBON, THICK GLOSSY, THICK,
MATT, THICK CARBON, and also in post-cards.

A special grade, called Tropical P.O. P., is manufactured for
use in hot climates.

WELLINGTON Self-Toning P.O.P.
This paper dispenses entirely with the gold toning solution,
the prints being placed direct in the fixing bath and allowed to
remain there until the desired tone is obtained.
It is made in four grades :—GLOSSY, MATT, THICK
GLOSSY, THICK MATT, and also in post-cards.
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