Tech tip1 min read
Microfilm Process Control Reminders
Simple routines for stable microfilm process control: weekly densitometer calibration, correlation strips, three control strips and daily charting.
Stable process control depends on a few simple, regular habits, summarized in this guide.
Highlights
- Calibrate the densitometer weekly with the manufacturer's calibration strip
- Use a Kodak correlation strip weekly to confirm measurement consistency
- Use at least three control strips per test and record the average D-Min, D-Max and AIM densities
- Plot test results on a chart daily
Source:Eastman Park Micrographics(epminc.com)(opens in a new tab)
Frequently asked questions
When and with which strip should the densitometer be calibrated?
Weekly with the manufacturer's calibration strip.
Which strip is used weekly to check that densitometer readings stay stable?
A Kodak correlation strip.
How many control strips should be used per test and which densities should be recorded?
At least three control strips, recording average D-Min, D-Max and AIM densities.
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