Utilizing carefully selected colour differences and opacity, NOA coatings enable a painter visually to confirm that the specified film thickness is achieved during application. In other words, NOA system is a film thickness controller wich shows the applicator that the correct film thickness has been achieved.
What is SI (Self-Indicating) technology?

SI thechnology
Utilizing carefully selected colour differences and opacity, NOA coatings enable a painter visually to confirm that the specified film thickness is achieved during application. In other words, NOA system is a film thickness controller wich shows the applicator that the correct film thickness has been achieved.
Utilization of Colour Difference
The following charts show colour difference between substrate / shop primed surface and NOA. Buff colour is selected as being the most suitable for NOA coating SI technology. This Buff colour is applicable to the other shop primer colours including gray (Green & Brown).
Colour Development of SI Paint
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The following graph indicates the correlation between visual evaluation of film thickness and the measured DFT in the 320 µm type coating.
Product Description
NOA is Nippon Paint Marine`s unique technology providing users for the first time with the ability to judge the correct thickness of the paint. NOA`s unique patented technology reduced the need for complicated thickness checking by thickness gauge.