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ECO 4812
State of the ART of 2007
After 20 years of experience
with the creation of developers it is time to break new grounds.
Modesty
and self-effacement are inappropriate. While others beat the drums
and blow the horns, a flute would be too silent to be heard:
ECO
4812 original “eau de Hürth” is my best positive developer
and thus probably the best developer on the planet.
The
normal dilution is 1+14.
Development time: 2½ - 3 minutes
If
you use the same exposure times in a dilution of 1+10 and develop
for only 2 minutes, the contrast will increase.
The density
of the base fog and Dmax on glossy fibre base and RC papers: 0.00
– 0.02 / 2.00 – 2.30 depending on the paper used. You
can find the highest Dmax and with it the highest contrast range
with full separation of the shadows, if you use one of the usual
suspects: Ilford MGW and Galery, MCC, but also cheaper alternatives
such as Adox Fine Print Classic.
In its standard dilution of
1+14 this developer is unsuitable for Kentmere Fineprint. For this
paper I recommend a dilution of 1+9 or the use of one of the classic
developers such as HP Universal, SE1, SE4 or SE6. For these developers
as well, use a dilution of 1+9 and develop for 3 minutes!
The
stock solution has a shelf life of 4 years. When opened and depending
on the filling level in the bottle this reduces to approximately
2 years. The working solution has a shelf life of 8 months.
The
capacity per litre of stock solution is around 400 sheets of 24x30cm
paper.
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