Does anyone know the Shelf Life of a Diazo copy roll of Microfilm?

S

S. Thompson

#1
#1
Sorry if this is the wrong place to post this, but it was the nearest i could find!

Does anyone out there know the sheldf life of a diazo copy roll of microfilm?

Thank you!

Sandra

:rolleyes:
 
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Jim Wynne

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#2
#2
S. Thompson said:
Sorry if this is the wrong place to post this, but it was the nearest i could find!

Does anyone out there know the sheldf life of a diazo copy roll of microfilm?

Thank you!

Sandra

:rolleyes:
Click to expand...
Most sources I've seen say 40-50 years when archived under ideal conditions, but in practice it's usually considerably less than that. Diazo film should be used for "working" copies of silver halide archives; A good silver halide microfilm have much longer life expectancies but are more expensive to produce, thus many make relatively inexpensive diazo copies of silver halide "originals" for everyday use.
 
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