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Ian Grant · 07-04-2008, 06:17 AM

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

07-04-2008, 06:17 AM	#1 (permalink)
Ian Grant Join Date: Aug 2004 Location: Turkey (West Midlands, UK) Posts: 4,678	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 06:50 AM.