What is the proper sequence for cleaning a sprayer between products?

What is the proper sequence for cleaning a sprayer between products?

• A. Flush with water, rinse with an appropriate cleaner if required, flush again with clean water, and drain and dry.
• B. Rinse with cleaner, fill with water, spray until empty, then store.
• C. Drain and dry, then flush with water and rinse with cleaner.
• D. Flush with water, store immediately without cleaning.

Answer: (A)

The main idea is to remove any remaining product and residues so the next product isn’t contaminated. Start by flushing the sprayer with clean water to wash out the bulk of what’s left from the previous product. If the label or safety data recommends a specific cleaner, run that cleaner through the system to break down residues. Then flush the system again with clean water to rinse away any cleaner residue. Finally, drain the remaining liquid and let the sprayer dry before storing. This order—water flush, any required cleaner, water rinse, then drain and dry—ensures residues are effectively removed and the equipment is safe for the next product. Storing without cleaning risks cross-contamination, and cleaning after draining or using cleaner before a thorough rinse can leave residues and still contaminate the next application.

The main idea is to remove any remaining product and residues so the next product isn’t contaminated. Start by flushing the sprayer with clean water to wash out the bulk of what’s left from the previous product. If the label or safety data recommends a specific cleaner, run that cleaner through the system to break down residues. Then flush the system again with clean water to rinse away any cleaner residue. Finally, drain the remaining liquid and let the sprayer dry before storing. This order—water flush, any required cleaner, water rinse, then drain and dry—ensures residues are effectively removed and the equipment is safe for the next product. Storing without cleaning risks cross-contamination, and cleaning after draining or using cleaner before a thorough rinse can leave residues and still contaminate the next application.