Washing & Maintenance2 min read

Wash Water Trials: Compare the Same Shampoo in Two Water Supplies

Compare shampoo performance in two water supplies while holding dose, contamination, tools and rinse procedure consistent.

Updated · NANOLAB Knowledge

Editorial illustration: Choosing Shampoo for a Ceramic-Coated Car
Editorial illustration

A shampoo that performs well in one workshop may behave differently with another water supply. A controlled comparison helps determine whether water conditions are relevant without immediately changing the formula or increasing the dose.

Characterise the water question

Water hardness generally concerns dissolved calcium and magnesium. It is not interchangeable with every dissolved-solids measurement. Choose measurements relevant to the suspected problem and record the sample source, time and any treatment equipment.

Keep the cleaning system consistent

Hold constant Record
Shampoo Same batch and approved working concentration
Surface Comparable finish and contamination
Tools Equivalent clean wash and drying media
Procedure Wash, rinse and dry sequence

Use separate containers and tools to avoid mixing the water supplies. Keep temperature and measurement timing comparable. Repeat the trial on independent samples rather than judging one favourable panel.

Measure the result that matters

Record cleaning completeness, rinse demand and the dry appearance. Foam appearance can be recorded, but it is not a complete cleaning measure. A solution that makes less foam may still clean adequately; a thick foam can still leave residue.

An illustrative interpretation

If both supplies clean similarly but one leaves more dry spotting, investigate rinse water and drying before changing shampoo strength. If the difference appears during washing, repeat with the same contamination and tools to confirm it is not a handling effect.

Do not add household chemicals to force the two water samples to behave alike. Any water treatment or formulation change needs an appropriate technical assessment and a new documented comparison.

Turn the result into a workshop decision

The outcome may support a water-system review, a revised rinse routine or a different compatible product. State which water supplies and conditions were tested. A local comparison can improve the workshop’s process without establishing a universal ranking for every water source.

Technical references

The sources below support the stated concepts or describe their own methods. The worked scenarios are editorial examples, not NANOLAB test results.

Ask NANOLAB about your surface and intended use. For application and care, use the current instructions for the exact product.

Washing & Maintenance2 min read

Choosing Shampoo for a Ceramic-Coated Car

Choose a compatible wash product, use its dilution correctly and avoid judging cleaning suitability from a ceramic label or foam thickness alone.

Washing & Maintenance2 min read

Ceramic Shampoo in a Two-Bucket Wash Routine

Use a two-bucket wash routine with ceramic shampoo while preserving correct dosing, wash-media cleanliness and the product’s specific rinse requirements.