Microfilm cleaners

In a recent reply for a simple film cleaner wherein I recommended a
combination of 1,1,1 trichloroethane and hexane in a 70:30 ratio I
failed to suggest that heptane may be substituted for the hexane. As
with all solvents please observe proper handling and use with
adequate ventilation.

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                  Conservation DistList Instance 9:31
                Distributed: Wednesday, October 4, 1995
                        Message Id: cdl-9-31-008
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