This International Standard specifies a method for the measurement of the thickness of thin, highly reflective coatings (up to 2μm) by the use of Fizeau multiple-beam interferometry.
The method described cannot be applied to vitreous enamel coatings.
BS EN ISO 3868:1995 history
0000 BS EN ISO 3868:1995(1999)
1995BS EN ISO 3868:1995 Metallic and other non-organic coatings - Measurement of coating thicknesses - Fizeau multiple-beam interferometry method