Which method is acceptable for applying wet developers?

Applying wet developers in a laboratory or manufacturing setting is typically done using methods that ensure even coverage and prevent damage to the substrate. One of the most accepted methods for applying wet developers is by spraying or dipping.

Spraying allows for a fine mist to be distributed over the surface, which can be beneficial for getting into small crevices or covering large areas uniformly. This method can also allow for a controlled application that minimizes waste. On the other hand, dipping is effective for fully immersing substrates in developer solutions, ensuring thorough coverage.

Other methods, such as hand spraying only, may limit the coverage and consistency compared to the combination of spraying and dipping. Wiping with a cloth can lead to uneven application and the potential for introducing contaminants, as well as the risk of removing previously applied layers. Screaming the developer is not a recognized method and does not pertain to any standard practice in fabricating or applying developers.

Thus, the combination of spraying or dipping stands out as the most reliable and effective method for applying wet developers, ensuring proper coverage and application control.