510 - Pyro New generation Stain developer

12 novembre 2015  Pier-Luigi  Formule (0)

510-PYRO

TEA (triethanolamine) 75 ml
Ascorbic acid 5 g
Pyrogallol 10 g
Phenidone 0.25 g
TEA to make 100 ml

Mixing instructions: Add chemicals in specified sequence.

Dilution: 1+100

Starting point development time: 5-7 mins.

Notes: Can also be diluted up to 1:500 for EDRA (extended development/reduced agitation) techniques, with one minute initial agitation, followed by one inversion every 10-15 minutes for one hour, or so.

 

510-Pyro and Hypercat are highly concentrated acutance developers, designed specifically for use with their respective solvents. Both developers produce very fine grain, and full film speed, are suitable for all films and formats, and all development methods, including rotary processing. Any practical development time can be used by adjusting the developer dilution. Both developers are very clean working, producing very low fog, even when developing to the high density ranges required for UV processes. TEA and glycol concentrates are easily and accurately measured and dispensed with a measuring syringe.3ml, 6ml, and 25ml syringes cover a very wide range of dilutions and working solutions. Since these developers are so concentrated, small variations in dilution make no practical difference in the performance of the working solution, so it is perfectly acceptable to simply add the required volume of concentrate to the total volume of water. In other words, if one wishes to make up one liter of a 1:100 dilution of 510-Pyro, one can simply add 10ml of concentrate to 1 liter of water.

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