Fixer
To be used with persulfate bleach (may also be used with alternate process bleaches)
Constituent | Fresh Tank | Fresh and Seasoned Tank | Fresh | Replenisher Analytical | |||
Analytical Specifications | Replenisher | Specifications | |||||
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Fixer |
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Water | 800 mL |
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| 700 mL |
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Ammonium Thiosulfate Solution (58%) | 100 mL | 100 ± 10 mL/L | 170.0 mL | 170 ± 10 mL/L | |||
Sodium Sulfite (Anhydrous) | 2.5 gL | 15.0 ± 3.0 g/L* | 16.0 g | 23.0 ± 3.0 g/L* | |||
Sodium Bisulfite (Anhydrous) | 10.3 g |
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| 5.8 g |
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Potassium Iodide | 0.50 g | 0.50 ± 0.02 g/L | 0.70 g | 0.70 ± 0.02 g/L | |||
Water to make | 1 L |
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| 1 L |
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pH at 25.0°C (77.0°F) |
| 5.8 ± 0.2† |
| 6.6 ± 0.2† | |||
Specific Gravity 25.0°C (77.0°F) |
| 1.060 ± 0.003 (fresh) |
| 1.083 ± 0.003 | |||
Hypo Index (3 mL sample) |
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| 24.0 ± 2.0 |
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| 38.0 ± 2.0 | |
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* Test method (using 3 mL sample) measures sulfite and bisulfite together as total sulfite (Na2SO3).
†Fixer pH may decrease with certain operating conditions when electrolytically desilvering the fixer. If the fixer is not desi lvered or desilvered by the batch method, the replenisher pH should be 5.00 ± 0.015. Care should be taken to avoid fixer pH lower than 4.5 since lower fixer pH could cause sulfurization of the fixer.
To process a large quantity (more than one tank turnover) of VISION Premier Color Print Film, the normal replenishment flow rate of the fix may need to be increased by up to 30%.
Alternate Process Fixer
(can be used with alternate process bleaches, not persulfate)
Constituent | Fresh Tank | Fresh and Seasoned Tank | Fresh | Replenisher Analytical | ||||
Analytical Specifications | Replenisher | Specifications | ||||||
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Fixer |
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Water | 800 mL |
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| 700 mL |
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Ammonium Thiosulfate Solution (58%) | 100 mL | 100 mL ± 10 mL/L | 170.0 mL | 170 mL ± 10 mL/L | ||||
Sodium Sulfite (Anhydrous) | None | 15.0 ± 3.0 g/L | 2.5 g | 20.5 ± 3.0 g/L* | ||||
Sodium Bisulfite (Anhydrous) | 13.0 g |
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| 17.5 g |
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Sulfuric Acid (7.0 N) | 2.7 mL |
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| None |
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Water to make | 1 L |
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| 1 L |
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pH at 25.0°C (77.0°F) |
| 5.00 ± 0.15† |
| 5.80 ± 0.15† | ||||
Specific Gravity at 25.0°C (77.0°F) |
| 1.060 ± 0.003 (fresh) |
| 1.083 ± 0.003 |
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Hypo Index (3 mL sample) |
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| 24.0 ± 2.0 |
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| 38.0 ± 2.0 |
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* Test method (using 3 mL sample) measures sulfite and bisulfite together as total sulfite (Na2SO3).
†Fixer pH may decrease with certain operating conditions when electrolytically desilvering the fixer. If the fixer is not desil vered or is desilvered by the batch method, the replenisher pH should be 5.00 ± 0.15. Care should be taken to avoid fixer pH lower than 4.5 since lower fixer pH could cause sulfurization of the fixer.
To process a large quantity (more than one tank turnover) of VISION Premier Color Print Film, the normal replenishment flow rate of the fix may need to be increased by up to 30%.
Process |