In short
A good accord record lets you, or anyone else, make the same accord again: each material's exact identity and lot, what you weighed and at what dilution, the same formula restated in pure material, and what you noticed. The test is simple: can you remake it from the record alone, and does it match?
What you will learn
- Record an accord so that someone else could remake it
- Convert a bench record into parts of pure material
- Name and link versions clearly
Before this lesson: Accord Troubleshooting: Diagnose What Went Wrong
What goes in
| Field | Why |
|---|---|
| Name and version: Rose-A v3 | Links this trial to its history |
| Date, and who made it | Traces the trial later |
| Parent version and the single change | Shows what this test was |
| Each line: material, supplier, lot | Natural lots differ, and so do suppliers |
| Weight actually on the scale, and its dilution | What happened, not what you meant to do |
| Pure material for each line | The formula itself |
| Parts per 100 of pure material | What you reuse |
| Observations, with times | Why you kept or rejected it |
| Decision | Keep, adjust or abandon, and why |
A worked conversion
Here is an invented accord, as weighed on the bench:
| Line | Weighed (g) | Dilution | Pure (g) | Parts per 100 |
|---|---|---|---|---|
| Material A | 1.50 | Neat | 1.500 | 75.0 |
| Material B | 4.50 | 10% | 0.450 | 22.5 |
| Material C | 5.00 | 1% | 0.050 | 2.5 |
| Total | 11.00 | 2.000 | 100.0 |
The accord's total weight of 11 g contains 2 g of pure material, plus 9 g of solvent carried in by the dilutions. So this blend is itself about 18% active. A bench weight of "4.5 g of B" made it look like a major ingredient, and in fact B is 22.5% of the accord. Our guide on absolute and relative percentage takes this further, and Level 5 practices it thoroughly.
Naming versions
Use a short name and a number that only goes up: Rose-A v1, v2, v3. Never reuse a number, and never overwrite. A branch can be noted as from v3. The guide to formula version control covers this in general, and it matters more as formulas grow. Do not use "final". There is always another version, and then you have "final2".
Paper or app
A notebook or a spreadsheet can hold this. The formula template guide includes a template. If you use the RUŌOD Lab app, a formula line holds a material with its weight and dilution, and the app works out the pure amounts. Its Duplicate creates a marked new version and leaves the old one untouched, and material records can hold a supplier and any lot field you add. Observations still have to come from you.
Practical exercise: Rewrite one accord from your notes
- Pick one accord from an earlier workshop, ideally one with a dilution in it.
- Rewrite its record with all the fields above, including the pure material and parts per 100.
- Check that the parts add to 100 and that the pure weights are correct.
- A week later, remake the accord in a small batch from the record alone.
- Compare it with the original, if you still have it. Add anything that was missing from the record.
You have done this well if the remake needed no information from memory. Any time you had to guess, the record gained a new field.
Common mistakes
- Recording the target weight rather than the actual one. Write what the scale showed.
- Leaving out the dilution. It is the most damaging omission.
- Writing observations as reactions. "Nicer" helps less than "rounder at 1 h, top unchanged".
Knowledge check
Written and reviewed by the RUŌOD Lab team. This is general education, not legal, regulatory, medical or safety advice. Example dilutions and exercises are for learning, are not validated products, and have not been safety-assessed. Completing a lesson confers no qualification. How we check these lessons.