I've been retesting all the fragrances I have using this method:
1. Add approx. 1 mL FO to a 50 mL beaker. 2. Add approx 2 mL Dehyton G surfactant (sodium cocoamphoacetate) 3. Mix with plastic spoon until surfactant is fully emusified (visual/physical change is evident) approx. 10s 4. Add 15mL distilled water and mix thoroughly. Allow to stand for 5 min. Does it clear? If so, class as "most compatible" grade with clears. If the mixture is still cloudy or milky after 5 min., then: 5. Add 10mL anionic (primary) surfactant 6. Mix with plastic spoon observing effect Does it clear? If so, class as "class 2" grade with clears. (Perfectly usable) If the mixture is still cloudy or milky after 5 min., then: class as least compatible grade with clears
I also note for each one, whether it thinned, had no effect on, or thickened the mixture, and an estimate of the %usage (some aromas are really strong to my nose and others not; maybe a panel of noses is necessary to make any sensible decisions. How do YOU decide on aromas?) Fortunately I have a good relationship with my IFF distributor here, who is generous with test samples.
I decided to pour the tests into the kitchen bottle of Dawn, which was about a third full. Interestingly, after combining all the tests - about 50% went clear for me - with the Dawn, it all became clear and I could even see, close up, a shimmer of mica from one of the leftovers. It made great washing up liquid.
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