Patent ID: 8603408

Claim:
An apparatus for control of on-site mixing of at least a first and a second solid product, comprising: a base having an outer support member and an aperture therethrough; a screen attached to the base and substantially covering the base aperture; a first chamber positioned at the base aperture, the first chamber having a first open end extending generally upward from the screen, an opposite second open end extending generally downward from the screen, and a chamber wall therebetween; a fluid impervious layer between the inside of the first chamber and the area outside of the first chamber, wherein the chamber wall forms the fluid impervious; and a reservoir circumferentially surrounding the first chamber and above the screen, wherein the first solid product is housed in the first chamber between the screen and the first open end, and the second solid product is housed in the reservoir, wherein the chamber wall extends through the screen and the plurality of inner support members.