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British Production.
281
done with the minimum of delay. A series ot four routine tests devised byMessrs. Kodak has been in operation since January, 1943. The tests are for acidity (measurement of pYL), remaining life (by accelerated ageing), residual hypo (applied to new acquisitions), and tendency to fade. Of the 308 earliest films in the collection to which the chemical tests were applied exclusively 85 were found unstable In a report on ideal conditions for film preservation the Technical Committee pointed out that this could only be achieved in one of two ways : either by copying every film on to acetate base, or by installing an air-conditioning plant for the storage of nitrate film which would maintain a constant temperature range of 33 deg. Fahr. to 40 deg. Fahr.
Denham Laboratories, Ltd. — -The quality of the Company's product and of their service to customers has been maintained at its usual high standard. During the year 1943 much has been done to improve the quality of both our 35 mm. and 16 mm. product. The moment building operations can be recommenced it is proposed to add a fresh wing to the existing building, to house a completely new 35 mm. negative developing plant of the latest design.
The output of 16 mm. printing has been greatly increased by the installation of new machinery which was all built at Denham Laboratories' machine shop. The 16 mm. developments are noteworthy inasmuch as special reduction printing machines have been designed and constructed using completely new principles whereby the quality of definition is improved as well as the quantity of output. This machine-building programme is part of an extensive plan prepared by the Directors of the Company for post-war development, and, where possible, preparations are already beyond the "on paper " stage and work has begun.
" INDIVIDUAL TREATMENT"
16 M/M Negative Developing
AND
LABORATORY SERVICE
Production Processing Titling
J. SCOTT-RUSSELL
CINEMATOGRAPH FILM LABORATORIES,
7, GREAT CASTLE STREET, OXFORD CIRCUS LONDON, W.I
Telephone: LANjsham 4382 Established 1912