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  1. #1
    Ian Grant's Avatar
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    Pathescope Ltd, B&W Reversal Processing

    First Developer

    Sodium Sulphite (anhyd) 20g
    Para-phenylene-diamine 10g
    Potassium Bromide 4g
    Sodium Hydroxide 8g
    Water to make 1 litre

    Develop 17 - 18°C (62 -64°F) 8-10 minutes
    Wash 7-10 mins

    All other solutions at 16 -17°C (60 -62°F)

    Reversal & Clearing

    Reversal Bath

    Water 750ml
    Potassium Dichromate 5g
    Sulphuric acid (conc) 10 ml
    Water to 1 litre

    ADD THE SULPHURIC ACID DROP BY DROP TO THE 750ml WITH CARE.

    Reversal 5 - 7 minutes

    Wash 1 - 2 minutes

    Clearing Bath

    Sodium Sulphite (anhyd) 20g
    Sodium Hydroxide 0.8g
    Water to 1 litre

    Clear for 2 - 3 minutes

    Second Exposure

    Expose to white light. No specific time is given but 5 - 10 mins 1.5 metres from 500 watt bulb should be sufficient

    Second Development

    Metol 2g
    Hydroquinone 10g
    Sodium Sulphite (anhyd) 75g
    Sodium Carbonate (anhyd) 25g
    Potassium Bromide 2g
    Water to make 1 litre

    Development to finality, approx 3 minutes.
    Wash 10 minutes

    Fixing

    Sodium Thiosulphate 250g
    Sodium Metabisulphite 20g
    Water to 1 litre

    Wash for 20 minutes
    Last edited by Ian Grant; 07-28-2008 at 05:50 AM. Click to view previous post history.

  2. #2
    Ian Grant's Avatar
    Join Date
    Aug 2004
    Location
    West Midlands, UK, and Turkey
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    Pathescope Ltd, 1954

    First Developer

    Sodium Sulphite (anhyd) 70 g
    Hydroquinone 10 g
    Sodium Carbonate (anhyd) 35g
    Potassium Bromide 8 g
    Potassium Thiocyanate 3 g
    Sodium Hydroxide 5 g
    Water to 1 litre



 

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