WEIGHT TO VOLUME EQUIVALENCY CHART
Using this table, you will be able to mix formulas without using a gram scale. This chart gives equivalencies in tablespoon and teaspoon fractions, so you can measure out chemical amounts using cooking measuring spoons. For example, 1 tablespoon of potassium dichromate equals 22 grams. 1/4 teaspoon will hold 0.85 grams of of Elon, etc.
Weight listed in Grams
| Chemical | 1 TBSP | 1/2 TBSP | 1 TSP | 1/2 TSP | 1/4 TSP | 1/8 TSP |
| amidol | 7 | 3.5 | 2.3 | 1.2 | 0.7 | 0.4 |
| benzotriazole | 6 | 3 | 2.1 | 1 | 0.5 | 0.25 |
| borax | 15 | 7.5 | 5 | 2.5 | 1.3 | 0.7 |
| boric acid | 12 | 6 | 4.1 | 2 | 1 | 0.5 |
| chlorquinol | 9.7 | 5 | 3.4 | 1.7 | 0.8 | 0.45 |
| glycin | 4.1 | 2.1 | 1.4 | 0.7 | 0.35 | 0.2 |
| hydroquinone | 9 | 4.5 | 3 | 1.5 | 0.75 | 0.4 |
| Kodalk (Kodak balanced Alkali) | 14.5 | 7.2 | 4.8 | 2.4 | 1.2 | 0.6 |
| Metol (or Elon) | 10.5 | 5.25 | 3.5 | 1.75 | 0.85 | 0.45 |
| phenidone | 6 | 3 | 2 | 1 | 0.5 | 0.25 |
| potassium alum | 16.8 | 8.4 | 5.6 | 2.8 | 1.5 | 0.8 |
| potassium bromide | 19.5 | 10 | 6.5 | 3.2 | 1.6 | 0.8 |
| potassium dichromate | 22 | 11.5 | 7.9 | 4.1 | 2.2 | 1.1 |
| potassium ferricyanide | 15.5 | 8 | 5.5 | 2.8 | 1.5 | 0.8 |
| silver nitrate | 41 | 20.7 | 13.8 | 7 | 3.6 | 1.8 |
| sodium bisulfate | 22.9 | 11.5 | 7.7 | 4 | 2 | 1 |
| sodium bisulfite | 18 | 9 | 6 | 3 | 1.5 | 0.75 |
| sodium carbonate | 18 | 9 | 6 | 3 | 1.5 | 0.75 |
| sodium sulfate | 22.5 | 11.4 | 7.7 | 3.8 | 2 | 1 |
| sodium sulfite | 22.8 | 11.4 | 7.6 | 3.8 | 1.9 | 1 |
| sodium thiosulfate | 18 | 9 | 6 | 3 | 1.5 | 0.75 |
Source: Beyond Basic Photography, by Josh Horenstein, �1977.