 |
|
| Water not over 90F/32C | 500 | ml |
| Sodium Sulfite (anhydrous) | 30 | g |
| Paraformaldeyhde | 7.5 | g |
| Sodium Bisulfite | 2.2 | g |
| Boric Acid (granular) | 7.5 | g |
| Hydroquinone | 22.5 | g |
| Potassium Bromide | 1.6 | g |
| Cold water to make | 1000 | ml |
| Mixing Instructions: Add chemicals in specified sequence. When mixing seal the bottle to exclude air as each chemical is added. Allow to stand for 2 hours after mixing. Cool to 68F/20C for use. Store any unused solution in a smaller bottle or use an amber bottle with glass marbles to exclude as much air as possible. |
| Dilution: Use undiluted for maximum density. |
| Usage: Starting point dev time: 2 mins. |
Notes An alternative version may be prepared by substituting 2.6g of Potassium Metabisulfite for 2.2g Sodium Bisulfite |
