Complete treatment for the GigabitfilmGTP.
I'd like to indicate to all the users of Gigabitfilm GTP the following treatment:
1) Development: 24°C 11 minutes with (1+15) on 250 ml water 17 ml chemistry and/or on 350 ml water 23 ml chemistry.
2) Stop bath: At least 3% Acetic acid stop bath set (reference: With 99% concentrate = 30 ml per litre stop bath, with 60 70% =50ml/l, with 25% = 120 ml/l use), at least are altogether 30 sec. with a overturn tank every 15 seconds, but not longer than 1 minute.
3) FIX: 16 ml fixing bath concentrate (Superfix Plus, Ilford Hypam, Rollei RXA) and/or 24 ml Agfa Agefix on 250 ml water (for 266 and/or 274 ml Fixing bath), as a fixing time with this dilution are valid 3 minute.
4) First washing in running water (same temperature of the development and FIX) 15 minutes.
5) Non oxidizing Hypo eliminators bath, such as Kodak Microfilm Clearing bath.
Attention: Hypo eliminators containing oxidizing agents, such as peroxide, should be avoided, because they can promote image deterioration.
6) Second washing (like point 4)
7) Final bath with wetting agent (about 2 min.).
Tank agitation: During the first 30 sec., only 1 movement of overturn (turn upside down) of the tank every 5 second (6 times during the first 30 sec.)
After these first 30 sec. is enough 1 movement (overturn) every 30 second.
When the tank moves, will be necessary to make soon (to fill up the tank, then to close the cover, then to move it the first time). With all tank these three actions (to fill up/to close/to move) would have to be made in less than 15 second.
For an optimal conservation to longest time (archival) of the Gigabitfilm negatives (than with a corrected treatment, with an complete hypo elimination has an E.L. of 500 years), I council the use of negatives sleeves (and box reel) in MicroChamber, able to protect the archives negatives from many acids and polluting substances presents in the air (like paint fumes, peroxides, nitrogen oxides, hydrogen sulfide, sulfur dioxide, ozone, ammonia, etc) that in the long term damage all the photographic material, film and print.
I remain to disposition for further info.
An good treatment for Gigabitfilm GTP, photo and cine film
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