Follow all label directions. You can find a generic label for citric acid here: Citric Acid 25b label

Making your own citric solution:

• MISC recommends mixing citric at a 16% solution or 1.28lb of anhydrous citric acid per gallon of water. The best method is to mix the solution by weight it but if you mix by volume use approximately 2 1/2 cups per gallon.
• Citric dissolves in solution, but needs to be thoroughly agitated when mixing so that citric chunks will not clog your sprayer.
• MISC can supply citric to community members. Call Rebecca Creighton, Coqui Field Coordinator at 808-633-6646 to acquire citric.

Storage:

• To keep your gear (pumps, sprayers, etc.) in good shape, it is best to thoroughly rinse it with water. Metal pieces that have been touched by citric will start to corrode if not properly washed after each use.
• It is best to store unmixed citric in a dry and shady area.

Common-sense caution:

• Some plants are sensitive to citric acid, and can be burned if sprayed. You can reduce the damage to sensitive plants by rinsing off the spray within 15 minutes. Plants sensitive to citric acid solution
• It is important to wear Personal Protective Equipment (PPE) when applying citric acid, as citric acid can irritate your eyes and skin. PPE includes shoes, long-sleeves, long pants, eye protection, and ear protection (if applicable).

Follow all label directions. You can find a generic label for citric acid here: Citric Acid 25b label