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Old 9th May 2020, 09:19 AM
John King John King is offline
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Default RA4 printing with Tetenal - A warning!

I have recently had to change my RA4 baths in my Nova processor because of under replenishment. The replenishment rates were not given in my 5 litre kit so on advice from Tetenal they advised me about 10cc per 10x8 print would be adequate - WRONG!

Since then the company has undergone changes and the new RA4 kits are different. That 10cc replenishment may have been OK for the old previous formula, but that has now been changed to make it odourless.

The instructions in the new kit I am using states that a 5 litre kit will be sufficient to print approx. 230 10 x 8 prints which equates to a replenishment rate of slightly over 20cc per print, a significant difference. This also applies to the bleach fix as well.

With this increase in replenishment volume makes the Tetenal kit which was already pro rata, roughly twice the price of the Kodak Ektacolour RA4 20 litre developer and Blix 20 litre bought separately. Now double the price again because the replenishment rate for the Kodak is still 10cc per each 10x8 sheet of paper.

Once this Tetenal kit is finished I am going back to Kodak.
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Old 9th May 2020, 01:47 PM
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photomi7ch photomi7ch is offline
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Thanks for the update.
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Old 9th May 2020, 02:52 PM
Mike O'Pray Mike O'Pray is offline
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I wonder if this is connected to the "death and phoenix like revival of Tetenal? I have difficulty keeping up with all the posts that a thread about this on Photrio resulted in but it would seem that Tetenal has changed a few chemicals since it revival and if I recall correctly it made chemicals for Kodak where HC110 for one underwent changes

If this is the case then key to this might be whether Kodak RA4 chemicals will have to change

Despite the so-called revival in film that we are allegedly in the middle of, there does still seem to be worrying signs

Mike
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Old 9th May 2020, 08:00 PM
John King John King is offline
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Default Kodak RA4

According to the last bottles of Kodak RA4 Ektacolor the place of manufacture was China. Tetenal did not have a hand in it, nor do I think they will.

As it happens I much prefer Ektacolor rather than Tetenal as it seems to be far more stable and of course economic in use. By my rough calculations comparing the average cost of 4 x 5 litre kits of Tetenal with 20 litres of developer and blix from Kodak, then factor in you need only half the quantity to replenish, that works out around 4 times cheaper. It is a no brainer really.
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