-40%

Pyrocat-HD in glycol, high acutance film developer (10 liters), Alt.photography

$ 7.12

Availability: 100 in stock
  • Type: Developer
  • All returns accepted: ReturnsNotAccepted
  • Brand: Lab made (tested)
  • Country/Region of Manufacture: Lithuania
  • Condition: New

    Description

    Due to pandemic Postal services are
    disrupted
    and the shipping will be delayed.
    Pyrocat-HD ( 2x100 ml )
    for 10 liters working solution
    Pyrocat-HD in glycol is a high acutance developer.
    Solution A
    ( pg ) mixed in propylene-glycol stabilizes the formula to give a very long shelf life and long term consistency.
    Solution B
    Caution
    If you spill a solution of Catechol, wash the area (or skin) with soap and water. Use tongs or rubber gloves whenever possible when working with this compound or its solutions.
    Working Solution
    To make a standard working solution mix 1 part A with 1 part B with 100 parts water (1:1:100)
    DEVELOPMENT PROCEDURES
    1. Pre-soak for five minutes. The pre-soak is optional with tray and tank development (except with minimal and stand development), but it is absolutely essential with rotary processing.
    2. Development for the time required in tubes, drum, tray or tank according to the instructions that follow.
    3. Stop bath. I recommend the use of a dilute acetic acid bath of about 1/4 to 1/2 normal strength. If the stop bath is too strong it will reduce image stain.
    4. The use of an
    alkaline
    fixer is recommended (Kodak or Ilford rapid fix works just fine).
    5. One minute in a hypo-clearing agent. I use a 1% solution of sodium sulfite.
    6. Wash under running water for 30 minutes.
    You can search for more info:
    About developing times:
    digitaltruth.com
    ---------------------------------------------------------------------------------------------------------------------------
    Photographers' Formulary 1L Glacial Acetic Acid, Hazmat
    SKU: PYACA1LT
    Mfr. Part: 10-0015 1 LITER
    Description
    The Photographers' Formulary Glacial Acetic Acid is used for Hardening and acid fixing baths, Stop bath, Clearing bath after ferrous oxalate development of bromide paper and Solvent of gelatin/celluloid/pyroxylin.
    Note:
    Photo grade 28% is prepared by diluting 3 parts acid, to 8 parts water. White vinegar is a weak form of Glacial Acetic Acid and can be used as a substitute.
    Specifications
    Volume
    1L
    Synonyms
    Acid methane carboxylic, Ethanoic acid, Purified pyroligneous acid, Vinegar
    Appearance
    Clear, colorless liquid;
    Uses
    Strong pungent vinegar like odor
    Hardening and acid fixing baths
    Stop bath
    Clearing bath after ferrous oxalate development of bromide paper
    Solvent of gelatin, celluloid, and pyroxylin
    Chemical Formula
    CH3COOH
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