Answer
1 kg copper sulphate + 1 kg hydrated lime + 100 L water for the standard 1% mix (chestnut compound is a related copper–lime powder). Dissolve the copper sulphate in half the water in a plastic container, slake the lime in the other half, pour the copper solution into the lime slowly while stirring, and use the same day.
Detailed question
What is the composition of Bordeaux mixture?
Products