Brix is measured with a refractometer. Dr. Carey Reams devised a chart that shows how fruits & vegetables can be ranked as either poor, average, good, or excellent based on their Brix measure. This forum is for open discussion of how to improve plant health---with full understanding of how that improved health can lead to improved health for animals and humans. Most health forums appear unaware that the quality of plant products can so dramatically affect the health of those who consume them. This forum will have a special focus on the Tissue Test methods designed by Bob Pike of Pike Agri-Labs. Those tests often hold the key to significant improvement in crop quality and yield. Note to new members: as an anti-spam measure, the first few posts from new members will be automatically moderated.