Wet Film

Thickness Gages

Measuring the film thickness of freshly applied coatings in the wet stage is very important.

On one hand, film thickness influences the quality of a product; on the other hand, applying

too much coating can be expensive. Depending on the application method, it is advisable

to measure wet film thickness. For measuring wet film thickness, BYK Gardner offers a comb or

“interchemical gage”.

Comb Type Gage

The comb is a ruler-shaped gage with two supports at each of its six sides, having tabs of

varying lengths.

·      Hexagonal shape made of corrosion resistant stainless steel

Procedure:

·       For measuring, push the comb gage perpendicularly into the film using the measuring range that corresponds to the expected film thickness

·       Remove the comb gage from the coating

·       The wet film thickness will fall between the clearance of the shortest tab that is wet and the clearance of the next shortest dry tab

·       The plastic comb gage may be used up to 60^๐C (140^๐F)