If a jar test shows precipitation, what should you do?

• A. Do not mix and consult the label or manufacturer.
• B. Proceed with mixing anyway.
• C. Increase the mixing ratio to dissolve precipitate.
• D. Add water to dilute the mixture.

Answer: (A)

A jar test checks whether tank-mixed products will stay compatible in water. If you see precipitation, it means the ingredients don’t stay dissolved together and are incompatible. The right move is not to mix them in the field. Instead, consult the product label or the manufacturer for compatible combinations or recommended alternatives. Precipitation can clog nozzles, cause uneven coverage, and reduce efficacy or crop safety. If you truly need both products, use them separately or switch to a labeled compatible mix. Do not try to fix it by increasing the mixing ratio or adding water to dilute the mixture, as that can worsen the problem.