how do i extract potassium ferrate from solution?

making potassium ferrate

iron sulfate and potassium nitrate (more powerful oxidizer than bleach) in an alkaline solution
cant seen to extract the potassium ferrate crystals from the potassium hydroxide
i did get it to turn pink so i know i have it potassium ferrate as this video shows
http://www.youtube.com/watch?v=pUvdETUQPuo

Put it in a dessication bag if you cant boil off the water.
lemonie7 years ago
Have you tried evaporating the water content?

L