IDA Washing and Decontamination 2

Question 1

What type of water is recommended for a final rinse in a professional detail and why?

Accepted Answer

Deionized or reverse osmosis (RO) water to prevent mineral water spots

Answer

Hard tap water for its mineral content

Answer

Distilled water with added detergent

Answer

Recycled wash water from the first rinse

Question 2

What is a 'foam cannon' or 'foam gun' used for in a professional wash process?

Accepted Answer

Pre-soaking the vehicle with a thick foam layer of diluted shampoo to dwell and loosen surface dirt before contact washing

Answer

Applying clay lubricant to large panels

Answer

Applying a spray wax after washing

Answer

Removing dried bugs with high-pressure foam

Question 3

How should wheels be washed relative to the rest of the vehicle to prevent cross-contamination?

Accepted Answer

Wash wheels first with dedicated wheel tools before washing the paint panels

Answer

Wash wheels last after all paint is clean

Answer

Wash wheels and paint simultaneously with the same products

Answer

Wheels do not need to be washed separately

Question 4

What is the safest drying method after a professional wash to minimize swirl introduction?

Accepted Answer

A clean, thick plush microfiber drying towel with gentle blotting or a filtered forced-air dryer

Answer

Chamois leather buffed in circular motions

Answer

Driving the vehicle at highway speed

Answer

Paper towels for a lint-free finish

Question 5

What does the 'zip baggie test' reveal about a paint surface?

Accepted Answer

Whether the paint surface has bonded contamination by feeling for roughness through the plastic bag

Answer

The pH level of the paint surface

Answer

The gloss level of the clear coat

Answer

Whether wax or sealant has been previously applied

Question 6

What pH range is considered safe for a wash shampoo used on a ceramic-coated vehicle?

Accepted Answer

pH 6–8 (neutral to mildly alkaline)

Answer

pH 1–3 (strongly acidic)

Answer

pH 12–14 (strongly alkaline)

Answer

pH 9–11 (moderately alkaline)