Conversion - PPF to Einsteins
An Einstein is defined as a mole of photons.
Therefore: microEinsteins per m2 per second is identical to micromoles per m2 per second.
1000 µE m-2s-1 ≡ 1000 µmol m-2s-1
Einsteins were interchangeably used along with µmol m-2s-1 in the 60's and 70's, but the Einstein is not a unit in the SI (International System) of units, so using moles is preferred.
For more information see:
Units, Symbols, and Terminology for Plant Physiology
A Reference for Presentation of Research Results in the Plant Sciences
Edited by Frank B. Salisbury
Oxford University Press, 1996
