tetenal ra4 room temperature two baths

[danzyc]

hello friend! any experience with this two bath developer??the quality is good compared with the traditional bath????

the darkroom print color is ridicolous nowadays with modern epson printer?? the result is the same???


thanks

 

[Photo Engineer]

hello friend! any experience with this two bath developer??the quality is good compared with the traditional bath????

the darkroom print color is ridicolous nowadays with modern epson printer?? the result is the same???


thanks

The last anyone quoted a price for it, it was overpriced.

The Kodak and Fuji RA-RT developer replenisher can be used at room temp (20 C) with no problem and no extra cost.

PE

 

[danzyc]

could you tell me the number of bath???

the temperature could be vary? or precisely 20 degree??? there's a range??

 

[PHOTOTONE]

could you tell me the number of bath???

the temperature could be vary? or precisely 20 degree??? there's a range??

The Kodak and/or Fuji RA-RT developer replenisher absolutely can be used as developer at a wide range of temperatures. Yes there is a range. You extend or contract the development time depending on the temperature.

The whole RA-4 process is just 2 chemical steps

1. Developer

2. Blix

It is normally the same time in each step.

Using the process at room temperature is not something Kodak or Fuji talks about, but it works just fine. The normally high temperatures at which labs use RA-4 is designed for maximum processing speed.

 

[danzyc]

could i process the paper in a classic b&w bath?? the blix is very toxic ?? ( i have bought tetenal ra4 rapid kit)

could i use a lamp during the printing session?

thanks

 

[nickandre]

The blix is not very toxic. It may look like wine, but don't drink it. I've heard it's concentrated plant food when mixed, but the silver in it after processing is considered a heavy metal. It stains a bit though. The developer has a slight odor, but its much better than the typical acetic acid scent you find in B+W darkrooms and it dissipates quickly. I find no problems using it in a not well ventilated darkroom of small size. The traditional chemistry would not work for developing in color, and would be poor for printing b+W. Just get the Kodak developer-replenisher and the blix. The tetenal stuff isn't worth it.

You can use an amber colored filter, not a red one. It will effect the results (says kodak.) I haven't tried it yet though I have the filter.

I use normal tray development for 2 minutes followed by a blix of some undetermined amount of time around 2-3 minutes for a print or less if it's just a test strip.

 

[Photo Engineer]

Use a Wratten 13 safelight filter with a 7 - 15 W bulb depending on distance from the paper.

Neither the blix nor the developer are toxic to any extent. The blix contains Ammonium Hypo and Ferric EDTA. The Ammonium Ion and Ferric EDTA are used in plant fertilizers at low concentration so it will not kill things if diluted and run down the drain.

PE

 

[danzyc]

last question the c41 colortec is the same about toxicity????

thanks friend for help me!

 

[nickandre]

If the colortec has just about zero, then yes.

Just don't drink it.