Which of the following is NOT true regarding a dappen dish?

A dappen dish is specifically designed for the mixing and storage of polymer powders and monomer liquids used in nail services. The unique features of a dappen dish help maintain the quality of these materials while minimizing waste and ensuring safety during the application process.

Having a narrow opening is vital for effectively controlling evaporation, particularly of the monomer liquid, which can evaporate quickly if exposed to air. A narrow opening helps to limit the surface area exposed to air, reducing the rate at which the monomer evaporates and ensuring that it remains usable for a longer duration. This design consideration is crucial because evaporation can lead to changes in the consistency and chemical properties of the product, potentially affecting the performance during application.

In addition, the correct usage includes covering the dappen dish with a lid when it is not in use, ensuring that dust and contaminants do not enter the dish. This practice helps maintain a clean work environment and prolongs the life of the products inside.

Requiring the dappen dish to have a wide opening contradicts proper storage and handling of the materials. A wide opening would increase the surface area exposed to air, promoting evaporation rather than minimizing it, which is contrary to the standards and best practices within the manicure industry.