In the circuit board sprayed on a layer of transparent anticorrosive adhesive, the thickness of 30-70uM, over the oven after drying, what instrumentation can measure the thickness of the gel?

Ask the supplier of the adhesive, they have a detailed product description, according to the instructions to test. Generally like this kind of film substances are first take a certain area of the plate, the surface of the gel film dissolved into a quantitative solution, through the spectrophotometer to detect, and then through the relevant formula to calculate the film thickness to.