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User Manual for Photographers' Formulary Pyrogallol Click to enlarge the picture
Contents of the user manual for the Photographers' Formulary Pyrogallol
- Product category: Alternative Process & Miscellaneous Chemistry Photographers' Formulary
- Brand: Photographers' Formulary
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Photographers' Formulary Alternative Process & Miscellaneous Chemistry
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User manual for the Photographers' Formulary Pyrogallol contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Photographers' Formulary product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Photographers' Formulary user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Photographers' Formulary product will considerably shorten its lifespan!
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Product description The chemical Pyrogallol is an active agent in Pyro film developers. At one time, Pyro was a universally used developer. It was even available in prepackaged formulas from companies such as Eastman Kodak. Unfortunately, it has been almost entirely replaced by metol-hydroquinone and Phenidone-hydroquinone type developers. The main reasons for that are the fact that Pyro stains, it must be handled carefully, and it does not keep well in solution. - When used correctly, Pyro creates a stained image of unprecedented tonal scale, especially in high values.
- In combination with either metol or Phenidone, it exhibits super-additive characteristics. It produces an overall stain on the negative, which adds to the contrast of the silver image. The stain is a desirable part of a properly developed Pyro image.
- Pyro tends to oxidize very rapidly in solution and cannot be kept without the aid of preservatives such as sulfuric or other acids, sulfites. Etc. Pyro should be added after these preservatives have been mixed with water.
- Pyro oxidation products act as strong anti-fogging agents.
UPC: 675152111036 Table of Contents
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Technical parametersPhotographers' Formulary 10-1110 1LB Specs | Synonyms | 1,2,3-Trihydroxybenzene
Pyrogallol
Pyrogallic acid
1,2,3-Benzenetriol
Piral
Pyro | | Appearance | A toxic white lustrous crystalline phenol
Fine white powdery crystals
Heavy, prismatic crystals | | Uses | Active agent in Pyro black & white film developers | | Chemical Formula | C6H6O3 | | Notes | Caution: Poisonous; wear a dust mask and gloves when working with the powder, use adequate ventilation, when working with the solutions. Clean up any powder or spilled solutions, and dispose of the residue safely. |
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