Changes In Alkalinity Of Colour Developer; Deviations In Results - tetenal colortec E-6 Gebrauchsanweisung

CHANGES IN ALKALINITY OF COLOUR DEVELOPER

when using E-6 control strip
Film- Colour deviation
manu- from reference
facturer standard
Kodak To
blue- magenta
To
yellow-green
Fuji To
red
To
cyan

DEVIATIONS IN RESULTS

Results Possible causes
Slides too light Over-exposure
Temperature of the first developer
too high
First developing time too long
Agitation at the first developing too
intensive
Contamination of the first developer
with bleach-fixing bath
Density variation in
colour step (the maxi-
mum spread of 0,13 is
exceeded)
Blue density is under
red density, green
density is under red
density
Blue density is over red
density, green density
is under red density
Red density is under
blue and green density
Red density is over
blue and green density
Suitable amount of
acid or base added
1 ml diluted sodium
hydroxide solution per
litre colour developer
1 ml diluted sulphuric
acid per litre colour
developer
1 ml diluted sodium
hydroxide solution per
litre colour developer
1 ml diluted sulphuric
acid per litre colour
developer
Measure
Check camera resp. exposure
Reduce temperature
Shorten first development time by 15
to 30 s
Reduce agitation
Rinse equipment and spiral thoroughly.
Approximate
change in
density values in
colour step
+ 0,05 to
yellow-green
+ 0,05 to
blue-magenta
+ 0,05 to
cyan
+ 0,05 to red
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