There are four different kinds of screen cap available, two different closure types (threaded and locking) and two different mesh sizes (B and N). Every cap has a safety wafer snapped on – this is removed by the end user before the container is inverted into a Viking Bowl. The caps are meant for jugs (also called bottles, jars, and containers) with a 100 millimeter Threaded or Locking neck finish. Screen caps can be used for both encapsulated powder chemicals AND solid chemicals. In the case of solids, they are usually used to prevent large chunks of chemical from falling on the grate and spray nozzle at the bottom of the bowl.
N Cap – Openings are .030” square
B Cap – Openings are .055” square