A container system includes a bag having of one or more sheets of flexible polymeric material, the bag having an interior surface at least partially bounding a chamber, the chamber being adapted to hold a fluid. The NAND circuit controls a transmission to the NAND circuit of the enable signal by the transmission gate based on signal which has been logic reversed by the NOT circuit and the NAND circuit. The ladle block includes a floor defining an outlet and sidewalls substantially orthogonal to the floor. The positive lens has an aspherical surface.