As explained in the previous post, Blend Caffenol results from a marriage between Caffenol Black and the Orange developer. Making mentally the calculation of soda amount, I miscalculated 23 instead of 28g and I used just 20 g/l, thinking that it should be enough. I measured a pH of the same value, i.e., 10,4 like the other two developers.
But, because Coffee and Vit. C are superadditive, the developing time decreases to 15 minutes, instead of the 60 minutes that each developer alone needs.
I prepared, on last 10th May, 2 Liter of this hybridus developer, Blend Caffenol, and divide it for 4 amber bottles of 500ml each. Let us remember the recipe of Blend Caffenol:
1000 ml water
10 g soluble cheap coffee
20g Sodium Carbonate
5 g of Vitamine C
In order to prevent its deterioration and permit the reusability, I added a pintch of Potassium Metabisulfite, lets us say 0,5 g/l.
With one of the 500ml bottles I already developed 4 rolls, the last two yesterday. One of the rolls, Agfa APX 100 ISO needed 40 minutes according to the proof of the tail I undertook first. The roll was well developed, slightly foggy, nothing serious.
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| Pentax P5, Agfa APX and Blend Caffenol |
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| Pentax P5, Agfa APX and Blend Caffenol |
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| Pentax P5, Agfa APX and Blend Caffenol |
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| Pentax P5, Agfa APX and Blend Caffenol |
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| Pentax P5, Agfa APX and Blend Caffenol |
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