How do I determine exposure times for my screens?

Correct exposure times can be easily determined using a specifically designed calculator, such as Sericol's Dirasol exposure calculator. This useful tool will help to set the optimum exposure time required to maximize reproduction quality while at the same time minimize pinholes and other exposure related stencil problems. Instructions for use are included within the package. The calculator process should be repeated monthly where an exposure lamp has no built-in integrator because lamp power output, and therefore exposure time, deteriorates over time. It must also be recalculated every time the lamp is replaced, the exposure distance is altered or the emulsion is changed.