"Brooks Bradley's simple test to gauge LET efficiency of a liposomal Vitamin C solution:

1) Pour 4 ounces of the finished LET Vitamin C into a 12oz container.
2) Add 1/4 teaspoon of sodium bicarbonate into 1 oz of distilled water, stirring well.
3) Pour the sodium bicarbonate solution into the LET Vitamin C mixture, stirring.

Results: If the resulting foam reaction line from this mixture is .5" or less you will have approximately a 50% encapsulation rate of the raw ascorbic acid nanoparticles. If the foam is 3/8" or less you will have approximately 60% encapsulation. If the foam is 1/8" thick or less, you will have around 75% encapsulation.

Jackdaw