A few texts describing the potentisation process involved in biodynamics and anthroposophical medicine.

Found a few good summarizing articles on Steiner's ethers and some of his indications on how to demonstrate the effect of the ethers upon the physical world.

Spectrum of elements and ethers
https://anthroposophy.eu/Spectrum_of_elements_and_ethers

Scientific research into the etheric formative forces
https://anthroposophy.eu/Scientific_research_into_the_etheric_formative_forces