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Kodak B&W Reversal Processing
| D-168 | ||
| Metol | 2 g | |
| Sodium Sulphite (anh) | 90 g | |
| Hydroquinone | 10g | |
| Sodium Carbonate (anh) | 44.5 g | |
| Potassium Thiocyanate | 2 g | |
| Water to | 1 litre | |
| Use FS or 1:1 | ||
| R-21a Bleach | ||
| Potassium Dichromate | 50 g | |
| Sulphuric acid (conc) - see note | 50 ml | ADD THE SULPHURIC ACID DROP BY DROP TO THE 750ml WITH CARE. |
| Water to | 1 litre | |
| Use 1:9 | ||
| R21b Clearing bath | ||
Sodium Sulphite (anhyd) |
50 g | |
| Sodium Hydroxide | 1 g | |
| Water to | 1 litre | |
| D-158 | ||
| Metol | 3.2 g | |
| Sodium Sulphite (anh) | 50 g | |
| Hydroquinone | 13.3 g | |
| Sodium Carbonate (anh) | 69 g | |
| Potassium Bromide | 0.9 g | |
| Water to | 1 litre | |
| Use 1:1 | ||
| D-8 | ||
| Sodium Sulphite (anh) | 90 g | |
| Hydroquinone | 45 g | |
| Sodium Carbonate (anh) | 37.5 g | |
| Potassium Bromide | 30 g | |
| Water to | 1 litre | |
| Use Full Strength | ||
| First Developer | D-168 FS or 1:1 @ 20°C 5-10 mins * | |
| Wash | 5 mins | |
| Bleach - Reversal Bath | 3-5 minutes | |
| Wash | 2 minutes rumming water | |
| Clearing Bath | 2 minutes | |
| Re-exposure | 2:30 minutes (500watt bulb at 1.5 metres) |
|
| Second Development | D-158 1+1 2-5 minutes 20°C | |
| or D-8 FS 4 minytes 20°C | ||
| Wash | 30 scs running water | |
| Fixer | In normal acid hardening fixer | |
| Wash | 15-30 minutes | |
| * D-167 (D19 + Thiocyanate) | Recommended for Plus X | |
| Metol | 2 g | Use Undiluted |
| Sodium Sulphite (anh) | 90 g | 6 minutes 20°C |
| Hydroquinone | 10g | |
| Sodium Carbonate (anh) | 44.5 g | |
| Potassium Bromide | 5 g | |
| Potassium Thiocyanate | 2 g | |
| Water to | 1 litre | |
| Alternative Reversal baths | Reversal takes approx 4 minutes | |
| Thiourea (Thiocarbamide) | 1 g | |
| Sodium Hydroxide | 4 g | |
| Water to | 1 litre | |
| or | ||
| Sodium Sulphide or Ammonium Sulphide | 1% solution |