Washing & Maintenance2 min read

Cleaning a Foam Cannon Bottle Before Changing Shampoo

Before changing shampoo in a foam cannon, clean the bottle and product path according to the equipment instructions.

Updated · NANOLAB Knowledge

Before changing shampoo in a foam cannon, clean the bottle and product path according to the equipment instructions. Residue from the previous product can change the next mixture and make a comparison between shampoos misleading.

Empty and clean deliberately

Identify the remaining product and follow its disposal instructions. Rinse the bottle, cap, pickup tube and accessible components as directed. Do not mix concentrates in an attempt to use every last drop. Pay attention to residue trapped around the neck and threads, where a new mixture can pick it up.

Follow the cannon manufacturer's flushing and maintenance procedure. Avoid dismantling pressurised equipment or forcing unsuitable tools through small metering parts. If an internal part is blocked, treat that as an equipment issue rather than compensating with a stronger shampoo mixture.

Control the first new mixture

Account for rinse water left in the bottle when measuring the next batch. Either drain it consistently or include the retained water in the total volume when it can be measured reliably. Use a clearly identified product and its specified mixture for that equipment.

Run a small practical check before covering a vehicle. Observe pickup, spray pattern and consistency. Foam thickness alone does not demonstrate cleaning ability, but a changed spray pattern can reveal an equipment problem worth resolving first.

Keep a note when changing both the shampoo and the cannon setting. If results later differ, those are two changes rather than one. For workshops using several products, dedicated labelled bottles can simplify handling, but the shared pickup and delivery components still need appropriate cleaning. The objective is a known product reaching the car through a functioning, clean delivery system.

For instructions for your exact NANOLAB product and surface, use the current product documentation or contact NANOLAB.