Submitted by admin_soper on Mon, 03/12/2012 - 08:26
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"D-76H" |
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water (125°F) |
750ml |
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metol |
2.5g |
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sodium sulfite (anhydrous) |
100g |
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borax (decahydrate) |
2.0g |
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water to make |
1 liter |
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target pH (at 25 °C, ± 0.05) |
8.53 (unpublished) |
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This is an unofficial variant of D-76, which omits hydroquinone and increases metol by 0.5g. This is promoted by Anchell and Troop (1998) who credit the idea to Grant Haist. This composition precludes the increased contrast of original D-76 during storage, but it does not prolong the shelf life from original D-76. However, use of this developer does not discharge hydroquinone to waste water. This formula is recommended for one shot use at 1+1 dilution, or repeated development up to 8 counts of 80 sq. in. of film per liter of stock strengh solution through reuse with increased processing time (10 to 15% increase after each roll). Reused solution should be kept for no more than two weeks as decreased activity may be detected.
