Ideally, all the phantom slides should conform precisely to the reference color values provided by Kodak and should maintain their color behavior. However, in practice, the reproducibility of the slides is found to be influenced by the medium between the glass and the film. When the film was prepared by using adhesive at the corners of the glass, the presence of air-created interference patterns, called Newton’s rings due to the reflection of light among multiple surfaces: slide-air, air-film, film-air, and air-cover. Moreover, the patterns change with time, depending on the temperature and surface pressure, resulting in corrupted color profiles. When an organic oil with a matching optical index was used to replace the air, the double-sided tapes used in sealing the slide borders were weakened with time causing leakage. Both the air and oil-based phantom slides, performing well at the time of manufacturing, turned out to be unsuitable for long-term practical use. Therefore, we opted for an adhesive-based phantom slide in which the film is glued with the glass slide and the cover glass by means of a transparent epoxy-based adhesive with a matching index, leaving no empty area.