How do I measure chrome-plated surface's quality? Is there a (digital) tool for it?

Question

I'm working in a decorative chrome-plating industry, not (hard-chrome). I usually take service job of chrome-plating banquet chairs, wheel rims, mufflers, etc. Sometimes, the chrome-plating result is not as stable/constant in quality or satisfactory as I had expected (not shiny enough or not rust-resistant enough). So I need something to measure the quality by putting up a standard, which I hope that this measurement tool (if any) would help me.

Answer 1

My understanding of plating is some what limited but usually defects stem from dirt and contamination,
either initially on the part to plated or in the solutions used.
Cleanliness of the item can be evaluated by washing the part with denatured alcohol and doing a particle count using a microscope. Plating and wash solution need maintained to appropriate levels.

The smoothness of the finish can be measured with a surf gage, something like a Pocket Surf or Hummel.

Reflectivity could be measured but I am not aware of any products. Light sources would have to be controlled.
My guess it would be laser based.

The thickness of the plating can be made with a digital thickness gage, or measuring before and after plating.
Seems like an Ultra Sonic thickness gage could also be used.

Usually coloration is done with sample comparison coupons.