Meter/mix systems vary immensely from application to application. Adhesive or sealant resin formulations can vary as well—by chemistry, viscosity, filler content, handling time, and moisture sensitivity, as well as other critical performance factors engineered by the material supplier. If a meter/mix system is chosen simply based on the mix ratio capability of the system, it will likely to fall short on capability to meet the application and production needs. Following are some key points to consider when choosing meter/mix equipment.